Clear, practical answers about laser eye surgery, eye conditions, lenses and everyday eye health.
This knowledge base answers questions about vision correction and eye health, from what LASIK and SMILE do to what a symptom might mean and how treatment is arranged in Dubai. Each answer states the direct answer first. Nothing here diagnoses an eye condition or decides whether a treatment is suitable for you: that requires an examination.
This is general educational information, not medical advice about your eyes. Where a symptom can be urgent, the answer says so and points at urgent care.
Written for readers in Dubai and across the UAE, and for anyone outside the country researching whether to travel here for an assessment. Answers cover laser vision correction, eye conditions, lenses and the everyday questions in between.
483 answers across 13 subjects. Every answer states the direct answer first, so you can stop reading as soon as you have what you need.
LASIK, SMILE, SMILE Pro, Femto LASIK, PRK and TransPRK explained, including how each one reshapes the cornea, what each can correct, and the honest comparison between them: which one suits a particular eye is a measurement question, not a preference.
The flap-based procedure most people mean when they say laser eye surgery.
LASIK is laser vision correction in which a thin flap is created in the surface of the cornea, the tissue underneath is reshaped with an excimer laser, and the flap is laid back into place.
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LASIK works by removing microscopic amounts of corneal tissue so that the cornea becomes flatter or steeper, which changes where light comes to focus inside the eye.
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LASIK is used to correct short sightedness, long sightedness and astigmatism, within limits that depend on your prescription, corneal thickness and corneal shape.
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The change LASIK makes to the cornea is permanent, but the eye continues to change with age, so vision later in life can differ from the vision you have in the months after surgery.
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The corneal reshaping does not wear off, so there is no fixed lifespan for the effect. What does change over time is your eye, and the most predictable change is the loss of near focus that begins around the mid-forties.
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LASIK is an established procedure with a long safety record, but no surgical procedure is risk-free, and the honest version of the question is not whether it is safe in general but whether it is appropriate for your particular eyes.
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The risks of LASIK fall into three groups: symptoms such as dry eye, glare and halos; imperfect correction, meaning some prescription remains or too much tissue is removed; and rare complications involving the flap or infection.
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The commonly reported side effects are dry or gritty eyes, halos and glare around lights, light sensitivity and vision that fluctuates during the day, particularly in the first weeks.
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LASIK changes the cornea deliberately and permanently, so the question is really whether it can cause harm beyond the intended reshaping. Rarely it can, and the situations worth knowing about are infection, flap problems and a cornea left too thin or too irregular.
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Total loss of vision from LASIK is not a recognised outcome of the procedure as performed on properly assessed eyes. The complications that are genuinely documented involve the cornea, the flap and the quality of vision rather than the optic nerve or the retina.
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The procedure itself is usually described as pressure rather than pain, because the eye is numbed with drops beforehand. Discomfort afterwards is common and is typically described as grittiness, watering or a burning sensation for some hours.
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Yes. LASIK is done with the eye numbed by drops, and you are awake and able to follow instructions for the whole procedure. Sedation is not usually needed.
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The laser part of LASIK typically takes only a few minutes per eye, while the whole visit including preparation, checks and settling usually takes considerably longer.
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Many people notice a substantial improvement within hours, and most describe vision as usable for ordinary tasks the following day. Vision often continues to sharpen and settle over the following weeks.
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Most people are back to ordinary daily activities within a day or two, while the eye continues to settle for several weeks and in some cases a few months.
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Driving depends on whether your vision meets the legal standard for driving and whether you feel able to react safely, so the decision is made per person rather than by the calendar. Most clinics advise arranging not to drive yourself home on the day.
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Many people return within a day or two, and screen-heavy work is the main reason to take longer, since early dryness can make prolonged reading uncomfortable.
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Light activity is often allowed early, while swimming, contact sports and anything where the eye could be struck are typically deferred until the flap and surface have settled. Your clinic will give you a specific schedule.
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Swimming is usually restricted for a period after LASIK because of the infection risk from water, and the same applies to hot tubs, lakes and the sea. Ask your clinic for the period it uses.
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Eye makeup is usually avoided for a short period after surgery, mainly to keep particles and bacteria away from the treated surface. The exact timing is the clinic’s call.
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Flying after LASIK is generally permitted, and cabin air dryness is the practical consideration rather than pressure. Ask the clinic how soon it is comfortable with, especially if you are travelling a long distance.
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Yes, it can, and the usual causes are a small regression in prescription, dry eye affecting the quality of the surface, or the onset of presbyopia. Blur that returns should be assessed rather than assumed to be one of these.
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Some people do, either for a small residual prescription, for reading as presbyopia develops, or because their prescription drifts over the years.
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Yes, astigmatism can be treated with LASIK, and the treatment is often combined with correction of short or long sightedness in the same procedure. How much can be corrected depends on your measurements.
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Short sightedness is the most commonly treated refractive error with LASIK. Whether your particular prescription is within a range that can be safely corrected depends on your corneal thickness and other measurements.
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Long sightedness can be treated with LASIK, but it is a different surgical problem from short sightedness and suitability is assessed more cautiously, particularly at higher prescriptions and in older eyes.
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LASIK is generally avoided where the cornea is too thin for the amount of tissue that would need removing, where the cornea is irregular or unstable, where the eye surface is significantly dry, and in a number of medical and medication situations.
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Suitability comes down to a prescription that has been stable, a cornea thick enough and regular enough for the planned correction, a healthy eye surface and no condition that makes healing or measurement unreliable.
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Before LASIK, the assessment usually includes refraction, corneal topography and tomography, measurement of corneal thickness, an assessment of the tear film and ocular surface, eye pressure, and a retinal examination with dilated pupils.
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There is no single cut-off figure, because the limiting factor is usually how much corneal tissue the correction would require rather than the prescription number on its own.
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Higher prescriptions can sometimes be treated, but the amount of tissue the correction requires rises with the prescription, so corneal thickness becomes the deciding factor more often than the prescription itself.
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Yes, a cornea that is too thin for the planned correction is one of the more common reasons LASIK is declined. The measurement that matters is the residual thickness predicted after treatment, not the starting thickness alone.
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Significant dry eye can make LASIK a poor choice, because surgery itself can worsen dryness in the short term and an unstable tear film makes the measurements less reliable and the healing less predictable.
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Astigmatism does not by itself rule out LASIK, and correcting it is a routine part of many treatments. What matters is the amount and the regularity of the astigmatism, along with the corneal measurements.
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Yes, age alone does not rule out LASIK. What changes after forty is that presbyopia is arriving, so the conversation shifts from purely correcting distance vision to deciding how you want to handle near vision as well.
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Some people can, and some are better served by a different approach, because after fifty the natural lens is often the more significant factor and cataract development starts to enter the plan.
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LASIK can remove the need for glasses for distance vision in many people, but no procedure can promise that you will never need glasses again at any point in your life.
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Repeat treatment is possible in some eyes but is not automatic, because a second procedure needs enough remaining corneal thickness and a pattern of change that makes sense to treat.
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If a residual prescription remains after the eye stabilises, the clinic may offer a further treatment, usually a surface procedure or a repeat laser treatment depending on the residual shape and the remaining corneal thickness.
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Treatment depends on what went wrong. Flap issues are usually repositioned or managed directly, infection is treated with medication, and residual prescriptions may be correctable with further treatment or with glasses.
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Bladeless flap creation, and what the clinic branding around it actually changes.
Femto LASIK is LASIK in which the corneal flap is created with a femtosecond laser instead of a mechanical blade, while the actual reshaping is still done with an excimer laser.
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The difference is how the flap is made. Femto LASIK uses a laser to create it; other LASIK uses a mechanical instrument. The part of the procedure that corrects your prescription is the same in both.
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Ultra LASIK is a marketing name rather than a distinct surgical procedure. It generally refers to a flap-based LASIK treatment combined with additional measurement technology, and the specific meaning varies between clinics.
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Often not. Many brand names describe a platform, a measurement technology or a marketing package rather than a fundamentally different operation, so it is worth asking what the name changes about your actual treatment.
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Lenticule extraction through a small incision, and how it differs from a flap.
No. SMILE creates no flap. A lenticule is shaped inside the cornea and removed through a small incision, so the surface of the eye is not lifted as it is in LASIK.
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SMILE is generally not used where the prescription falls outside the range the technique can address, where the cornea is unstable or irregular, or where the ocular surface is too dry to measure and heal reliably.
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SMILE is used at higher short sighted prescriptions than some older surface techniques, but what can be treated still depends on the cornea rather than on the prescription alone.
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Treating a single eye is possible and is sometimes deliberate, for instance where the two eyes have very different prescriptions or where only one eye is suitable. Much more often both eyes are treated, either on the same day or a short time apart.
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Yes, and it is a reasonable question to ask directly. Surgical experience is one of the few things about a clinic that a patient can actually check, alongside licensing and what the quoted price covers.
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The ZEISS platform generation, the VISUMAX 800, and what the naming covers.
Short sightedness and myopic astigmatism. Lenticule extraction is established for those two, and long sightedness is not a routine indication on the platforms in general use.
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No. Lenticule extraction uses one laser, a femtosecond laser, to create the lenticule and the small incision; there is no second laser and no excimer step, which is one of the structural differences from a flap procedure.
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It is the opening the surgeon uses to reach and remove the lenticule. The cornea stays intact apart from it, which is what the word flapless describes. The incision is a cut: describing it as keyhole surgery explains where the surgeon works, not how much tissue is involved.
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By asking which laser platform is installed rather than which procedure name the website uses. The two are performed on different generations of the same machine, so the platform identifies the treatment unambiguously in a way the word “Pro” does not.
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It is available at fewer clinics, it is not used for long sightedness, enhancement after it is a different procedure from lifting a flap, and the evidence comparing platform generations is still developing. None of those makes it a worse choice; they make it a choice with different trade-offs.
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Often it is quoted higher, and the reason is the platform rather than the difficulty of the surgery. What matters more than the difference between the two totals is whether each quote covers the same things: the assessment, medication, the follow-up visits and any agreed policy on enhancement.
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It can be suitable in some corneas where a flap would remove more tissue than a surgeon is comfortable with, and it is not a way around the problem: every refractive procedure removes tissue, and the amount required is what decides whether an eye is treatable.
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Because it requires a specific platform, the training that goes with it, and a surgeon who performs it often enough to stay current. A clinic offering many laser procedures will offer LASIK before it offers lenticule extraction.
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Experienced in this procedure specifically, which is a different question from how long they have been an ophthalmologist. Lenticule extraction has a learning curve that is not identical to flap surgery, so the relevant number is how many of these they perform and how often.
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Yes. During the laser step the eye is held against a curved interface, which is the pressure sensation most patients describe, and the platform tracks the eye while it works. The surgeon pauses or stops if the eye cannot be held in position.
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It is discarded as surgical tissue after removal. Because the lenticule is a shaped piece of cornea, researchers have explored reusing donated lenticules for other purposes, but that is experimental work and not part of routine care.
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Usually not. A cornea that has already had a flap procedure has less tissue and a different structure, and lenticule extraction assumes an intact cornea. Where a residual prescription after LASIK is treated, a surface treatment or a flap lift is the more usual route.
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Surface treatment with no flap and no lenticule, and a slower first week.
PRK is laser vision correction in which the thin outer layer of the cornea is removed, the surface underneath is reshaped with an excimer laser, and the outer layer grows back over the following days.
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TransPRK is a version of PRK in which the outer layer of the cornea is removed by the excimer laser itself rather than by a separate step, so the whole treatment happens in one continuous laser pass.
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PRK works by removing the surface layer of the cornea and then removing corneal tissue in a pattern calculated from your measurements, which changes where light comes to focus.
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The procedure itself is not painful because the eye is numbed. The first few days afterwards are commonly described as uncomfortable, with grittiness, watering and light sensitivity while the surface layer regrows.
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PRK recovery is longer because the outer layer of the cornea has to regrow, and vision stays soft while it does. Flap and lenticule procedures leave that layer intact, so the surface settles sooner.
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PRK is often considered where the cornea is thin, where the surface is irregular, or where a flap carries a specific risk, such as in people whose work or sport involves a high chance of eye trauma.
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PRK is one of the options considered when the cornea is thin, because creating a flap and the tissue it requires is avoided. Whether it is appropriate still depends on the predicted remaining thickness for your correction.
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The risks of PRK overlap with those of other laser procedures: dryness, glare and halos, and imperfect correction. It also has a specific risk of haze, which is a healing response in the surface tissue.
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Blur immediately after PRK is expected, and it can take longer to settle than after flap procedures. Blur that appears or worsens months later is a different matter and should be assessed.
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Returning to work after PRK depends on how quickly the surface settles and on what your work involves. It is usually longer than after a flap or lenticule procedure.
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Driving after PRK waits on your vision reaching the legal standard and on the discomfort being gone, which usually takes longer than after LASIK or SMILE. Arrange not to drive yourself home from the procedure.
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Light exercise is often permitted early, while swimming and anything risking a knock to the eye are deferred until the surface has healed. Follow the schedule your clinic gives you, since it is tailored to your healing.
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LASEK is a surface treatment in which the thin outer layer of the cornea is loosened with alcohol and folded back, the excimer laser is applied underneath, and the layer is replaced. It sits between PRK, where that layer is removed, and LASIK, where a thicker flap is created.
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Epi-LASIK is a surface treatment in which a mechanical blade separates the outer corneal layer before the laser is applied, instead of using alcohol or the laser itself. The clinical aim is the same as PRK: reshape the surface and leave no flap.
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Corneal haze is a recognised surface-treatment finding, and modern technique and aftercare have made it less common than it was in earlier decades. It is more likely with higher prescriptions and with deeper treatment, and it is one of the reasons surface treatment is planned around your measurements.
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Vision usually improves over the first week as the surface layer regrows, and then continues to settle over weeks to months. It is normal for the two eyes to recover at different speeds, and for vision to fluctuate while they do.
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A further surface treatment is possible in selected cases, provided there is enough corneal tissue left and the reason for the residual prescription is understood. It is not automatically offered, and the decision rests on the same measurements that decided the first treatment.
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Yes. Surface treatment can correct astigmatism as well as short sightedness and long sightedness, and the ablation is shaped to the amount and axis of your astigmatism.
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Both are surface treatments. In PRK the outer corneal layer is removed first and the excimer laser then reshapes the tissue underneath. In TransPRK, the laser itself removes that layer and performs the reshaping in one continuous step, without alcohol or a blade.
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Swimming and other water exposure are restricted until the surface of the eye has healed and your surgeon says so. The restriction is usually longer after surface treatment than after a flap or lenticule procedure, because the outer layer is regrowing.
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Surface treatment is unsuitable where the cornea is unstable or too thin for the planned correction, where there is active surface disease or significant dry eye, and where the healing response is expected to be unpredictable. It is also a poor fit for someone who cannot follow a strict early aftercare routine.
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Surface treatment is one of the ways a residual prescription after LASIK is corrected, because it does not require lifting the original flap. The decision depends on how much tissue remains and on the reason the residual is there.
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It can, within the limits the cornea allows, and surface treatment is sometimes chosen precisely because it conserves tissue compared with creating a flap. Higher prescriptions remove more tissue wherever the treatment is applied, so the measurement matters more than the technique.
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Surface ablation is the family name for treatments that reshape the cornea from the outside rather than by lifting a flap or removing a lenticule from inside. PRK, LASEK, epi-LASIK and TransPRK are all surface ablation.
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Pairwise comparisons, and why none of them has a universal winner.
SMILE reshapes the cornea and removes tissue; an implantable lens leaves the cornea intact and adds a lens inside the eye. They are used in different situations, most often at high prescriptions where too much corneal tissue would be needed.
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PRK removes the cornea’s outer layer and lets it regrow, while LASIK lifts a flap and replaces it. PRK involves no flap but a slower, more uncomfortable first few days.
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PRK removes the outer corneal layer and reshapes the surface, while SMILE removes a shaped piece of tissue from inside the cornea through a small incision. Both avoid a flap, and they differ mainly in recovery speed and in how the eye surface is left.
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The choice is made from your measurements rather than from your preference or from a general claim about which is better. Corneal thickness, corneal shape, prescription, tear film and the planned correction all feed into it.
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The difference is the access route. LASIK lifts a flap and reshapes beneath it; SMILE shapes a lenticule inside the cornea and removes it through a small incision. The rest of the treatment plan is built the same way, from your measurements.
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Both use a femtosecond laser, but Femto LASIK uses it to create a flap that is then lifted, while SMILE uses it to create an incision and a lenticule. The excimer reshaping step that follows is where the rest of the difference lies.
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They are two different techniques, not two versions of one. SMILE Pro removes a lenticule with no flap; Femto LASIK creates a laser flap and reshapes the cornea beneath it with a separate excimer laser.
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Flap and lenticule procedures generally settle more quickly than surface treatments, because the outer layer of the cornea is left intact. Beyond that the differences between individual procedures are smaller than the differences between individual patients.
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Surface treatments such as PRK are usually the most uncomfortable in the first few days, because the outer layer of the cornea regrows. Flap and lenticule procedures are generally reported as more comfortable early on.
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All of the corneal procedures can affect the tear film, and the honest answer is that dryness is assessed and treated before any of them is planned. Where dryness is significant, a lens-based option may be discussed instead.
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The limiting factor is how much corneal tissue the correction requires, not the procedure name. Techniques that remove less tissue, and lens-based options, come into their own as prescriptions rise.
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LASIK, SMILE and PRK can all treat astigmatism within limits set by your measurements. Larger amounts, or astigmatism from an irregular corneal surface, may point towards a different option entirely.
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People who play sport often end up discussing procedures without a flap, on the reasoning that there is nothing to displace if the eye is struck. That is a reasonable consideration, and it is still assessed against your measurements rather than assumed.
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Contact sports are one of the situations where a surgeon may steer away from a flap procedure, because a flap can in principle be displaced by trauma even years later. Flap-free options are often discussed instead.
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Where the cornea is thin, procedures that remove less tissue or need no flap are more likely to be considered, and a lens-based option may be raised where even those would take too much. The deciding measurement is the predicted remaining thickness.
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Treat the dryness first, then reassess. Dryness is a treatable finding in many people, and what is available to you afterwards may be different from what it looks like now.
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For a well-selected eye, modern procedures produce broadly comparable outcomes. Differences show up more in which eyes each technique suits than in a general ranking of visual results.
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You can and should express a preference, and the surgeon should explain whether your measurements support it. What should not happen is a procedure being performed because it was requested when the cornea suggests a different one.
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Read it as a list of the factors that differ, not as a scoreboard. Every procedure in a comparison table is the best available answer for some eyes, and the table is telling you which factors to ask about.
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Refraction, prescriptions and the vocabulary the assessments are reported in.
All laser vision correction procedures remove or reshape corneal tissue to change the eye’s focusing power, and they differ mainly in how the laser reaches the tissue it needs to reshape.
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Refractive surgery is any procedure that changes the eye’s focusing power in order to reduce dependence on glasses or contact lenses, and it includes corneal laser procedures as well as lens-based operations.
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The numbers, measured in dioptres, describe how much and in what direction light needs to be bent to focus on your retina. A minus value means short sightedness, a plus value means long sightedness, and a cylinder value describes astigmatism.
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Neither is better in general. Glasses are reversible and low risk; surgery is permanent and convenient for people it suits. Which one is the better choice depends on your eyes, your prescription and how much the dependence bothers you.
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The main groups are glasses, contact lenses, corneal laser procedures such as LASIK, SMILE and PRK, implantable lenses, and lens replacement where a cataract or presbyopia is the dominant problem.
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Laser vision correction is performed by ophthalmologists with additional refractive surgical training, working in a licensed facility. In Dubai, the facility and the practitioner are licensed by the health authority.
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Short sightedness, long sightedness, astigmatism and presbyopia explained in plain language, including why each one happens, how it is measured, and which of them laser vision correction can and cannot change.
Distance blur, focusing in front of the retina.
Short sightedness is a condition in which light from distant objects comes to focus in front of the retina instead of on it, which makes distance vision blurred while close vision stays relatively clear.
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Short sightedness is caused by the shape of the eye, meaning its length and the curvature of the cornea, and it develops from a combination of inherited tendency and environmental factors such as time spent on close work.
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Yes, particularly in childhood and the teenage years, when the eye is still growing. Progression usually slows and then stabilises in early adulthood, though it does not stabilise at the same age for everyone.
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The focusing error can be corrected permanently by laser surgery in suitable eyes, in the sense that the corneal reshaping does not reverse. The eye can still change with age, so the prescription can drift later in life.
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A small amount of regression is possible, and the cornea does not regrow the tissue that was removed. What is more common is a prescription change related to ageing rather than a return of the original error.
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Yes, short sightedness is the refractive error most commonly treated with LASIK. How much can be corrected for a given eye depends on corneal thickness and shape rather than on the prescription alone.
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Yes. SMILE is designed for short sightedness and for short sightedness combined with astigmatism, and suitability is assessed from your measurements.
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The options for high short sightedness are laser procedures where the cornea can safely spare the tissue, and lens-based options such as an implantable lens where it cannot. Which applies to you depends on your measurements.
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It cannot be prevented with certainty. In children, time outdoors is consistently associated with slower development of short sightedness, and treatments exist that aim to slow its progression. In adults, there is nothing established that stops a refractive error from developing.
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The eye’s length and the focusing power of its cornea are not reversed by treatment: glasses, lenses and surgery compensate for them. In children the prescription usually increases as the eye grows, and in some adults it continues to change slowly.
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High short sightedness generally means a prescription beyond the moderate range, and there is no single boundary that every clinician uses. What matters practically is that higher prescriptions ask more of the cornea, which is why they are planned from thickness and shape measurements rather than from the prescription alone.
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Higher short sightedness is associated with a greater chance of retinal detachment, retinal changes and, later, glaucoma and cataract. The association is with the length of the eye rather than with wearing glasses, and it is a reason for regular dilated examinations.
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There is a substantial inherited component, and the chances are higher when one or both parents are short sighted. Environment also matters, with sustained near work and less time outdoors associated with earlier onset in children.
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Focusing behind the retina, and why it presents later.
Long sightedness is a condition in which light comes to focus behind the retina, which the eye can often compensate for at a distance by focusing harder, at the cost of effort and eventual blur.
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Long sightedness is caused by the eye being shorter than its focusing power requires, or by the cornea being flatter than average. It is often present from birth and frequently runs in families.
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Long sightedness can be treated with laser correction, but it is assessed more cautiously than short sightedness because treating it requires removing tissue towards the edge of the cornea and outcomes are more variable at higher prescriptions and in older eyes.
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Laser correction can address long sightedness in suitable eyes, but where the condition is mild and only affects reading vision after forty, a different problem may be the real one, and it may have different solutions.
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No. Long sightedness (hyperopia) is a focusing error you are born with, where the eye’s optical power is too weak for its length. Presbyopia is the age-related stiffening of the lens that affects near focus later in life. Both blur close vision, and they are different problems with different corrections.
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Yes, and mild long sightedness is common in young children, whose eyes focus well enough to compensate for it. Most grow out of it as the eye lengthens. A young child with a high prescription may need glasses, because the effort of compensating can affect how the eyes work together.
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The prescription itself usually changes little. What changes is your ability to compensate for it: the lens stiffens with age, so the same amount of long sightedness becomes harder to hide, and people often notice symptoms in their thirties or forties that were always there.
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It can be corrected rather than cured. Glasses, contact lenses and refractive surgery all change where light focuses in the eye; the shape of the eye itself is unchanged, and it can keep changing with age. Long sightedness can also be corrected during cataract surgery, when the natural lens is replaced anyway.
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There is a strong inherited tendency, and the way the eye grows matters as much as eye optics: a shorter-than-average eye is long sighted. A family history does not predict an individual’s prescription, but it is a reason to have children tested rather than to wait for symptoms.
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By refraction: a test that finds the lens power that gives you the clearest vision, expressed as a prescription with a plus sign for long sightedness. In younger patients the measurement is usually repeated after drops that relax the focusing muscle, because otherwise the eye hides part of the prescription.
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It can, because the eye is doing continuous work to compensate. The usual pattern is discomfort after sustained near tasks, such as reading or screen work, rather than a headache on waking. Blur is not always present, which is what makes this easy to attribute to something else.
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Surface treatments and flap procedures can both correct hyperopia, and lenticule extraction is not a routine hyperopia treatment on the platforms in general use. The choice depends on your measurement and on what is cleared for use where you are treated.
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Uneven corneal curvature and the blur it produces.
Astigmatism is a refractive error caused by the cornea or lens being curved more in one direction than another, so light is focused unevenly and vision is blurred or distorted rather than simply out of focus.
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Most astigmatism comes from the natural shape of the cornea, and it is often present from birth. It can also be caused or worsened by injury, surgery or a condition such as keratoconus that changes the cornea over time.
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Astigmatism can be corrected with glasses, contact lenses, laser surgery or, in some cases, lens-based surgery. Which one is appropriate depends on the amount, the regularity of the cornea and whether it is stable.
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Yes, astigmatism is routinely treated with LASIK, often together with short or long sightedness in the same procedure. Very large amounts, or astigmatism from an irregular surface, may need a different approach.
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Yes. SMILE treats short sightedness with astigmatism, which is the combination it was designed around.
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Small residual or regressed astigmatism is possible after any refractive procedure. It is usually measured at follow-up and may be small enough to leave alone, correctable with glasses, or worth a further treatment.
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Regular astigmatism is an even curvature difference that glasses can correct. Irregular astigmatism is an unevenness that ordinary glasses cannot fully correct, and it is associated with conditions that change the corneal surface, such as keratoconus or scarring.
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It can change slowly, and a small amount of against-the-rule astigmatism is common as people get older. A rapid change in one eye, or a new difference between the two eyes, is worth examining rather than watching.
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Uncorrected astigmatism can cause eye strain and headaches, particularly after sustained reading or screen work, because the eye works harder to find a clear image. The symptom is not specific to astigmatism, so an examination is what distinguishes it from an uncorrected prescription or dry eye.
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Yes, and both do it well for regular astigmatism. Glasses need a cylinder value in the prescription; contact lenses need a toric design, which is a lens with a specific orientation that has to stay in position on the eye to work.
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The age-related loss of near focus, and what can be done about it.
Standard LASIK corrects distance vision, and it does not restore the near focus that is lost with presbyopia. Some clinics offer specific strategies aimed at reducing reading dependence, and each involves its own trade-offs.
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Presbyopia is the age-related loss of the ability to focus on close objects, caused by the natural lens inside the eye becoming less flexible. It affects almost everyone eventually, including people who have had laser eye surgery.
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Reading glasses become necessary because the lens inside the eye can no longer change shape enough to focus on near objects. The change is gradual and usually noticed first in low light or when tired.
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LASIK does not restore the lens’s ability to change focus, so it cannot undo presbyopia. It can be used in strategies that reduce reading dependence, at the cost of some distance sharpness or binocular balance.
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SMILE corrects the focusing error of the cornea, and presbyopia originates in the lens, so SMILE does not restore near focus on its own. It can form part of a plan designed around reading vision, and that plan is a decision made with your surgeon.
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The options for reading vision include reading glasses, varifocals, multifocal contact lenses, and surgical approaches such as monovision or lens replacement. Each trades something, and none restores youthful focusing power.
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Monovision means deliberately correcting one eye for distance and the other for near, so the brain combines them. It reduces dependence on reading glasses at the cost of some depth perception and sharpness.
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Age alone does not rule out laser eye surgery after forty. What changes is that presbyopia is arriving, so the discussion includes near vision and the trade-offs involved rather than distance vision alone.
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It usually begins to be noticeable around the early forties and continues to change, slowly, for decades. The timing varies considerably between people, and it is affected by your existing prescription: short sighted people often notice it differently from those who have never worn glasses.
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The lens inside the eye becomes less able to change shape, so it cannot increase its focusing power for near objects. The muscle that changes it still works; the lens itself becomes thicker and stiffer with age.
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No. The change in the lens is not reversible by laser treatment, drops or exercise. What can be done is to compensate for it: reading glasses, varifocals, contact lenses designed for it, monovision, or lens replacement that substitutes an implant for the stiffened lens.
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They are intraocular lenses designed to give useful vision at more than one distance, used when the natural lens is replaced: during cataract surgery, or as a refractive lens exchange in an eye without cataract. The categories are multifocal, extended depth of focus and accommodating designs.
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Yes, monovision can be created with laser vision correction: one eye is corrected for distance and the other is left or corrected for near. It is a deliberate compromise, and the usual advice is to try it with contact lenses first so you find out whether your brain tolerates it before anything permanent is done.
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It is possible, and it is a conversation rather than a yes-or-no. Correction can be planned so that your distance vision improves without making your reading worse, or deliberately set up as monovision. What surgery cannot do is give a 50-year-old the reading vision they had at 25.
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Blurred, unstable or tiring vision and what tends to cause it.
Blurred vision most often comes from an uncorrected or changed refractive error, a dry eye surface, or a problem with the lens, retina or optic nerve. Which one it is cannot be established from the symptom alone.
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Vision is commonly worse in low light because the pupil widens, which allows more peripheral light through and makes any refractive error more noticeable. Night blur can also relate to dryness, cataract or an irregular corneal surface.
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Halos and glare around bright lights at night can come from corneal irregularities, cataract, dryness, an uncorrected astigmatism, or the healing phase after refractive surgery. They are a symptom, not a diagnosis.
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This answer explains what the symptom commonly indicates. If it has come on suddenly, or is accompanied by pain or loss of vision, seek urgent care rather than waiting for an appointment.
Floaters are small opacities in the gel inside the eye that cast shadows on the retina. Many people have some, and longstanding floaters that are not changing are usually not an emergency.
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Which symptoms need urgent care
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Blur in one eye suggests something specific to that eye, such as a refractive difference, a surface problem, or an issue with the lens, retina or optic nerve on that side. It is worth an examination rather than a wait.
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This answer explains what the symptom commonly indicates. If it has come on suddenly, or is accompanied by pain or loss of vision, seek urgent care rather than waiting for an appointment.
A sudden change in vision needs urgent assessment rather than an appointment in a few weeks. It can be caused by something on the retina, a vascular event or an acute problem in the eye, and the timing matters for treatment.
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Which symptoms need urgent care
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Eye strain usually comes from sustained effort at a close task, often with an uncorrected or changed prescription, an unstable tear film, or prolonged focus without breaks. It is uncomfortable rather than damaging.
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This answer explains what the symptom commonly indicates. If it has come on suddenly, or is accompanied by pain or loss of vision, seek urgent care rather than waiting for an appointment.
Double vision has two broad causes: a problem in one eye, or a failure of the two eyes to align. Both need assessment, and sudden double vision needs it urgently rather than routinely.
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Which symptoms need urgent care
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Blur on waking is often a tear film problem, because the eye produces less tear overnight and the surface takes a few blinks to stabilise. It can also relate to a contact lens worn overnight, which is a reason to avoid that wherever possible.
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A refractive error is a mismatch between the focusing power of the eye and its length, so light does not come to a focus on the retina. Short sightedness, long sightedness and astigmatism are the three common forms, and each is described by a prescription.
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Short sightedness blurs distance because focus falls in front of the retina, long sightedness blurs near focus for most of the day because it falls behind, and astigmatism blurs in a direction because the cornea is curved unevenly. More than one can be present at once.
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There is no schedule that applies to everyone. Prescriptions often change through childhood and adolescence, settle in early adulthood, and then change again with reading vision in the forties and with cataract later. What matters is the pattern in your own records.
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Dry eye, cataract, glaucoma, keratoconus, retinal and diabetic eye disease explained: what each condition is, how it is diagnosed, and why some of them change which vision correction options are open to you.
Tear film, ocular surface and why surgeons care about it.
Dry eye is a condition in which the tear film is unstable or insufficient, either because too few tears are produced or because they evaporate too quickly, which leaves the surface of the eye irritated rather than adequately lubricated.
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Dry eyes are caused by a mix of tear production, tear quality, eyelid and blinking behaviour, medication, general health and environment. In most people several of those contribute at once.
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Screen time can contribute to dry eyes because people blink less often and less completely when concentrating on a screen, which allows the tear film to break up between blinks.
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Air conditioning can worsen dry eyes by lowering humidity and moving air across the surface of the eye, increasing evaporation. It aggravates an existing tendency more often than it creates one from nothing.
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Contact lenses can cause or worsen dryness, because a lens sits on the tear film and can reduce oxygen reaching the surface while increasing evaporation. Symptoms often improve when lenses are reduced or stopped.
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Dryness is a recognised side effect of LASIK, particularly in the early months, because the procedure affects the corneal nerves that contribute to tear production. It usually improves as the surface heals.
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Dryness can occur after SMILE, as it can after any corneal procedure. Research comparing procedures suggests differences in the degree of early surface disturbance, and that research describes averages rather than predicting an individual.
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Dry eye can usually be improved, though it is often managed rather than cured. Treatment depends on which part of the tear system is failing, which is why an assessment of the surface comes before a recommendation.
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Dry eye is diagnosed from the history together with an examination of the ocular surface, which usually includes how quickly the tear film breaks up, how the eyelids and glands look, and sometimes a test of tear production.
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Yes. An unstable tear film makes vision fluctuate, often improving briefly after a blink. That is why dryness has to be accounted for when measuring a prescription or planning surgery.
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There is no single period that applies to everyone. What matters is whether the surface has stabilised enough for the measurements to be reliable and for healing to be predictable, and that is judged from repeat examination.
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Lens clouding, surgery, and the intraocular lens choice that follows.
A cataract is clouding of the natural lens inside the eye, which scatters light and reduces the sharpness and contrast of vision. It develops gradually and is a normal part of ageing for many people.
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Ageing is the most common cause of cataracts. Other contributors include diabetes, prolonged ultraviolet exposure, smoking, eye injury, certain medications and some inherited conditions.
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The usual symptoms of cataract are gradually worsening vision, glare and halos around lights, more difficulty seeing in dim light, colours appearing washed out, and frequent changes in prescription.
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Cataract surgery is considered when the effect on your vision has become significant enough to affect what you need or want to do, and when you understand the benefits and risks.
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Cataract surgery is usually performed with anaesthetic drops and sometimes additional sedation, and it is generally described as painless with some awareness of light and movement.
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The operation itself usually takes a short time, and the visit as a whole takes longer. It is usually done as a day case, without an overnight stay.
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Vision often improves within days of cataract surgery, and the eye continues to settle over several weeks. Restrictions on lifting, swimming and eye rubbing are typically in place for a period afterwards.
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A cataract cannot come back, because the lens has been replaced. Some people do develop clouding of the capsule behind the new lens months or years later, which is treated with a short laser procedure.
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Intraocular lenses are broadly grouped into monofocal lenses, which focus at one distance, multifocal and extended depth of focus lenses, which spread the focus over a range, and toric versions of each, which correct astigmatism.
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A monofocal intraocular lens focuses at a single set distance, usually chosen for clear distance vision, so glasses are typically still needed for reading.
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A multifocal intraocular lens provides focus at more than one distance at the same time, which reduces dependence on glasses for near and intermediate vision.
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An extended depth of focus lens stretches a single focal region over a range of distances rather than creating separate focal points. It is often described as a middle position between monofocal and multifocal designs.
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A toric intraocular lens is designed to correct astigmatism at the same time as replacing the lens, rather than leaving the astigmatism to be corrected with glasses or further surgery.
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Where astigmatism is present and significant, a toric lens is usually the option considered, since it corrects the corneal shape as well as replacing the clouded lens.
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It can, and the extent depends on the lens chosen and on your eyes. Distance vision is commonly much less dependent on glasses afterwards, while reading often still needs help unless a lens designed for a range of distances is used.
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Cataract surgery in Dubai is priced per clinic and depends heavily on the intraocular lens chosen, so a single figure would be misleading. The lens is usually the largest variable in the total.
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Cataract surgery is more likely to be covered than elective laser vision correction, because it treats a diagnosed condition. Cover still depends on your specific policy, its exclusions and its pre-authorisation rules.
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Cataract surgery removes the clouded natural lens through a small incision and replaces it with an artificial intraocular lens. The replacement lens stays in the eye permanently, and its power is calculated before surgery from measurements of your eye.
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Cataract surgery is one of the most commonly performed operations, and complications are uncommon. The recognised ones include inflammation, raised pressure in the eye, swelling of the retina, infection, and a change in the position or clarity of the implanted lens. Most are treatable if they are identified.
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By examining the lens with a slit lamp, usually after the pupil is dilated. That examination shows whether the clouding is present and how much of the lens is affected; a change in the glasses prescription and reduced contrast sensitivity are common earlier findings.
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Some cataract surgery is performed with a femtosecond laser assisting parts of the operation, and the great majority is performed with ultrasound energy alone. Both approaches remove the same clouded lens; what differs is how the incision and the opening in the lens capsule are made.
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Often both eyes eventually need it, but not usually on the same day. Most surgeons operate on one eye at a time, with the second eye treated once the first has settled, so that the eye that is healing is not the only eye you have to see with.
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Laser eye surgery reshapes the cornea, the clear window at the front of the eye. Cataract surgery replaces the lens, the structure behind the iris. They treat different parts of the eye for different reasons, and one does not substitute for the other.
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Usually it is the wrong order. Laser vision correction changes the cornea, which makes the measurements used to choose a lens implant less predictable; if a cataract is already affecting your vision, replacing the lens addresses both problems at once.
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It is clouding of the capsule that holds the implanted lens, months or years after surgery, and it is not the cataract returning: the natural lens was removed. It is common, it is treated with a short laser procedure in the clinic, and it does not usually need surgery again.
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Refractive lens exchange removes a clear natural lens and replaces it with an artificial one, to correct a prescription rather than to treat a cataract. It is the same operation as cataract surgery, performed earlier, and it is usually considered when the lens is no longer able to change focus anyway.
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An implantable lens is a corrective lens placed inside the eye in front of your natural lens, without removing it. It is used most often for higher prescriptions where laser surgery would remove too much corneal tissue, and the natural lens remains in place.
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From measurements of the length of your eye and the curvature of your cornea, taken before surgery and entered into a formula that predicts the power needed. Because the prediction is not exact, the surgeon will usually aim for a small residual, and will tell you which direction the estimate is likely to fall.
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It can be, for the right eye and the right expectations. Lenses that give useful vision at more than one distance usually reduce dependence on glasses, and usually trade some contrast or night vision for it. Whether that trade is worth it depends on what you do with your eyes.
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A standard single-vision implant is usually inside what health insurance covers when cataract surgery is medically indicated. The additional cost of a lens chosen for a refractive purpose, like a multifocal or toric design, is often treated as an upgrade and charged separately.
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A toric implant corrects astigmatism at the same time as replacing the lens. It carries a specific orientation that has to be aligned to the axis of your astigmatism during surgery, and it is worth asking how that alignment is checked in the clinic treating you.
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Optic nerve damage, pressure and why it is monitored rather than felt.
Glaucoma is a group of conditions in which the optic nerve is damaged, usually in association with raised pressure inside the eye, and it typically affects peripheral vision before central vision.
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This answer explains what the symptom commonly indicates. If it has come on suddenly, or is accompanied by pain or loss of vision, seek urgent care rather than waiting for an appointment.
The common form of glaucoma usually has no symptoms until vision loss is advanced, which is why it is found by examination rather than by noticing something. A sudden painful red eye with blurred vision is a different, acute presentation that needs immediate care.
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Which symptoms need urgent care
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Glaucoma and the treatments for it can affect the measurements used in refractive planning, so it needs to be assessed and disclosed. It does not automatically rule surgery out, and it does change how the assessment is interpreted.
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Progressive corneal thinning and what it rules out.
Keratoconus is a condition in which the cornea thins and becomes progressively more cone-shaped, which distorts vision and cannot be fully corrected with ordinary glasses in many cases.
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Laser vision correction is generally avoided in keratoconus because removing corneal tissue from a cornea that is already thinning and unstable is likely to make matters worse. This is one of the clearest contraindications in refractive surgery.
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Keratoconus is detected with corneal topography and tomography, which map the shape and thickness of the cornea. This is a standard part of a refractive assessment and one of the main reasons those scans are done.
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Floaters, flashes, macular degeneration and retinal screening.
The retina should be examined because a refractive assessment is also an opportunity to find conditions that have nothing to do with the cornea and that would change how your eyes are managed, particularly in higher short sightedness.
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Macular degeneration is damage to the central part of the retina, which affects fine detail such as reading and recognising faces while peripheral vision remains.
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This answer explains what the symptom commonly indicates. If it has come on suddenly, or is accompanied by pain or loss of vision, seek urgent care rather than waiting for an appointment.
Flashes of light are often caused by the gel inside the eye pulling on the retina. New flashes, or flashes with a sudden increase in floaters or a shadow across the vision, need urgent assessment.
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Which symptoms need urgent care
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This answer explains what the symptom commonly indicates. If it has come on suddenly, or is accompanied by pain or loss of vision, seek urgent care rather than waiting for an appointment.
The pattern that needs urgent assessment is a sudden increase in floaters, new flashes of light, or a dark shadow or curtain moving across part of the vision. These should be assessed the same day rather than booked routinely.
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Which symptoms need urgent care
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An OCT scan uses light to build a cross-sectional image of the retina, which shows its layers and any fluid or thinning that a photograph would not reveal. It is quick and does not touch the eye.
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This answer explains what the symptom commonly indicates. If it has come on suddenly, or is accompanied by pain or loss of vision, seek urgent care rather than waiting for an appointment.
The retina separating from the wall of the eye, which threatens vision if it is not treated. The warning sign is often a sudden increase in floaters, new flashes of light, or a shadow or curtain moving across the vision, and it needs urgent assessment rather than a routine appointment.
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Which symptoms need urgent care
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Why diabetes changes both screening intervals and treatment plans.
Diabetes can damage the small blood vessels in the retina, a condition called diabetic retinopathy, and it also raises the risk of cataract and of other eye problems. It can progress without symptoms.
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Diabetes does not automatically rule out refractive surgery, but it changes the assessment: the retina is examined carefully, and stability of blood sugar matters because it affects both the measurements and healing.
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Yes. Fluctuating blood sugar can change the shape of the lens and produce temporary blur that shifts as control changes, and diabetic eye disease can also reduce vision. Blur in someone with diabetes deserves an examination.
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Damage to the small blood vessels of the retina caused by diabetes, which can leak or become blocked, and in more advanced stages grow new vessels. It develops silently, which is why it is found by screening rather than by noticing a change in vision.
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Conjunctivitis, styes, allergies and chemical or blunt injury.
Conjunctivitis is inflammation of the clear membrane covering the white of the eye and the inside of the eyelids. It can be infective, allergic or irritant, and the treatment differs substantially between those.
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This answer explains what the symptom commonly indicates. If it has come on suddenly, or is accompanied by pain or loss of vision, seek urgent care rather than waiting for an appointment.
A red eye needs urgent assessment when it is accompanied by significant pain, reduced vision, light sensitivity, a feeling that something is stuck in the eye, or contact lens wear.
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Which symptoms need urgent care
This information is for educational purposes and does not replace an examination by a qualified eye-care professional.
This answer explains what the symptom commonly indicates. If it has come on suddenly, or is accompanied by pain or loss of vision, seek urgent care rather than waiting for an appointment.
Yes. Contact lens wear is a recognised risk factor for corneal infection, and the risk rises sharply with overnight wear, with tap water contact and with poor lens case hygiene.
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Which symptoms need urgent care
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A stye is an infection at the base of an eyelash, and a chalazion is a blocked oil gland in the eyelid. Both produce a tender or firm lump, and most settle with warm compresses.
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Itchy, watery eyes usually point to allergy rather than infection, and allergy treatment differs from infection treatment. The itch is the distinguishing feature for most people.
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Inflammation of the eyelid margins, usually involving the oil glands that open along the lid edge. It causes crusting, redness, a gritty sensation and fluctuating vision, and it is chronic and managed rather than cured: lid hygiene and warm compresses are the mainstay.
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Glasses and contact lenses remain the benchmark every procedure is measured against. This section covers lens safety, wearing schedules, the complications that matter, and what to do about lenses before an examination or surgery.
Prescriptions, lens types and reading correction.
Neither is better in general. Glasses are simpler and carry almost no risk of eye infection; contact lenses offer a wider field of view and no frame, at the cost of handling, hygiene and a small infection risk.
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Both provide more than one focal distance in one lens. Bifocals have a visible line dividing two zones; varifocals blend the zones gradually, so there is no line and the transition is smoother.
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A prescription can differ between tests, partly because refraction depends on your responses during the test and partly because the eye’s focusing changes through the day, especially when tired or dry.
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Some people benefit from a lens designed for intermediate distances, particularly if they already need reading correction, because a standard reading prescription is set for closer work than a screen.
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Schedules, hygiene and comfortable wear.
Contact lenses are safe for most people when they are fitted properly, worn as instructed and cleaned correctly. The risks come almost entirely from overnight wear, water contact and poor hygiene.
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How long you can wear lenses depends on the lens type, your tear film and how your eye tolerates them. Comfortable wear is the guide, and a lens that needs removing because it is irritating should come out.
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With the solution the lens is designed for, by rubbing and rinsing it and storing it in fresh solution in a clean case. Never with tap water, never with saliva, and never by topping up the solution already in the case.
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Lenses worn once and thrown away at the end of the day. They remove the cleaning routine from the equation, which is why they are often recommended for occasional wear, for people who travel, and for anyone whose hygiene routine is likely to be the weak point of reusable lenses.
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Soft lenses are made of a flexible, water-containing material that conforms to the eye and is comfortable quickly. Rigid gas-permeable lenses are smaller, firmer and sit on the tear film, and they can give very clear vision and last longer, at the cost of a longer adaptation period.
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Orthokeratology uses rigid lenses worn overnight to flatten the centre of the cornea temporarily, so that vision is clear during the day without lenses or glasses. The effect reverses if you stop, and control of short sightedness progression in children is one reason it is used.
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Often yes, and comfort frequently changes: hormonal shifts alter the tear film and can make lenses that were comfortable feel dry or unstable. A fitting review is usually the answer rather than abandoning lenses entirely.
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Usually because the eye is drier by then. Blinking rate falls during screen work, air conditioning dries the surface, and a lens that fits well on a moist eye can feel gritty on a dry one. A drier eye at night is the pattern, not the lens deteriorating during the day.
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The complications worth knowing about, and how to avoid them.
This answer explains what the symptom commonly indicates. If it has come on suddenly, or is accompanied by pain or loss of vision, seek urgent care rather than waiting for an appointment.
Contact lenses can cause damage, most seriously by causing a corneal infection, which is why hygiene and wearing schedules matter so much. Long-term lens wear can also reduce the eye’s tolerance for lenses in some people.
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Which symptoms need urgent care
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You should not sleep in lenses unless they were prescribed specifically for overnight wear, because keeping a lens on a closed eye reduces oxygen and tear exchange and raises the risk of infection substantially.
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This answer explains what the symptom commonly indicates. If it has come on suddenly, or is accompanied by pain or loss of vision, seek urgent care rather than waiting for an appointment.
The signs to act on are eye pain, light sensitivity, a red eye that is getting worse, discharge, or any reduction in vision in a contact lens wearer. Those need prompt assessment rather than waiting.
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Which symptoms need urgent care
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This answer explains what the symptom commonly indicates. If it has come on suddenly, or is accompanied by pain or loss of vision, seek urgent care rather than waiting for an appointment.
Best avoided. Water carries organisms that can adhere to a lens and reach the cornea, and this is one of the recognised routes to the serious infections that contact lens wearers are warned about. If water gets in your eye with a lens in it, remove the lens and discard it if it is disposable.
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Which symptoms need urgent care
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Yes, both the lenses and the solution. Lenses past their expiry date have a degraded material, solution past its date and past four weeks after opening no longer disinfects reliably, and neither problem is visible from looking at them.
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They do not cause corneal astigmatism, and a lens that fits badly can temporarily distort the cornea so that measurements taken while you are wearing it are inaccurate. That temporary change is the reason for the stopping period before an assessment.
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This answer explains what the symptom commonly indicates. If it has come on suddenly, or is accompanied by pain or loss of vision, seek urgent care rather than waiting for an appointment.
Do not keep picking at it. Put lubricant drops in, wait a few minutes, and try again with clean hands, looking in the same direction as you move the lid. If it will not move, treat it as a clinical problem and be seen the same day rather than persisting.
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Which symptoms need urgent care
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They are as safe as clear lenses of the same quality, properly fitted. The problems come from lenses bought without a fitting: an unsuitable fit, a material not intended for prolonged wear, and no way to check the health of the eye that is wearing them.
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Stopping periods, and why they exist.
Yes, and wearing lenses does not disqualify you. You do have to stop wearing them for a period before the assessment and before surgery, because lenses change the shape of your cornea.
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The consequence is usually that the measurements are less reliable and may need repeating, which can mean a second appointment rather than a wrong result.
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Many people considering SMILE are long-term lens wearers, and lens wear on its own does not rule it out. The assessment still has to show a cornea suitable for the procedure.
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Not until the clinic that treated you says so and the surface has healed, which is measured in weeks rather than days. Putting a lens on a healing surface is a route to infection and, after a flap procedure, to disturbing the flap.
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From the first consultation to the last follow-up: what is measured and why, how to prepare, what happens on the day, and what a normal first week and first month actually look like.
Deciding, planning and preparing.
A vision correction consultation combines a refraction with a full eye examination and imaging of the cornea, and it ends with a discussion of whether surgery is appropriate and which technique fits your measurements.
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Bring your current glasses or the prescription for them, any contact lens details including the type and how long you wear them, a list of your medications, and any previous eye records or scans.
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A second opinion is reasonable whenever you are unsure, when two clinics recommend different procedures, or when a recommendation does not seem to follow from your measurements. It is not an insult to the first surgeon.
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What a clinician checks, and why no page can decide it for you.
Clinics generally look for a prescription that has been stable for a period rather than for a specific number, because operating on a moving prescription risks treating an eye that will not match the plan a year later.
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A refraction only establishes what prescription corrects your vision. It says nothing about corneal thickness, corneal shape, tear film or the health of the retina, and those are the findings that decide whether surgery is safe and which technique is appropriate.
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No. Eligibility depends on measurements that only an examination can produce, including corneal thickness and shape, tear film and the state of the retina. Any tool that claims otherwise is describing general patterns rather than your eyes.
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The clinician should tell you why, and what would change the answer if anything would: treating a dry surface first, waiting for the prescription to stabilise, or choosing a different procedure or a lens-based option. A refusal without a reason is an incomplete assessment.
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Topography, tomography, pachymetry, OCT, dilation and what each one shows.
A comprehensive eye examination covers vision and refraction, eye pressure, the external eye and eyelids, the cornea, and the retina and optic nerve, usually with dilating drops so the back of the eye can be seen properly.
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Corneal topography maps the surface shape of the cornea, producing a colour-coded elevation and curvature map that shows how regular the surface is and where the steep and flat areas lie.
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Corneal tomography measures the shape of the cornea in three dimensions, including the thickness profile across it, rather than describing the front surface alone.
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Pachymetry is the measurement of corneal thickness. It is one of the central measurements in refractive planning, because it determines how much tissue is available to be removed.
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Dilating drops widen the pupil so the retina and optic nerve at the back of the eye can be examined properly. Without dilation a large part of the retina simply cannot be seen.
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An eye pressure test measures the fluid pressure inside the eye, which is one of the main risk factors for glaucoma. It is quick and is done with a small instrument that touches the front of the eye after numbing drops.
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A retinal photograph records the appearance of the retina, and it is used as a baseline so that any future change can be compared against something. An OCT scan goes further and images the retinal layers in cross-section.
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A full examination with dilation usually takes substantially longer than a routine sight test, partly because some measurements need repeat readings and partly because the drops need time to work.
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It is the measurement that produces your glasses prescription: the lens power that gives the clearest vision for distance. It is a vision measurement rather than a health check, which is why a refraction alone cannot detect glaucoma, retinal disease or a corneal problem.
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It means you can see at twenty feet what a person with standard vision can see at twenty feet. It is a comparison against a reference, not a perfect score, and it says nothing about how well your eyes work together, your peripheral vision or the health of the eye.
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It maps your peripheral vision by presenting lights at different positions while you look straight ahead and press a button when you see one. It is used mainly to monitor conditions that affect side vision, particularly glaucoma, where the field can narrow before a patient notices anything.
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It is the microscope examination of the front of the eye with a narrow beam of light, which shows the cornea, the front chamber, the iris and the lens at magnification. It is also the instrument used to examine the retina with a lens held in front of the eye.
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With a combination of a symptoms questionnaire, the time it takes your tears to break up after a blink, staining of the surface with dye, and an examination of the eyelid glands. There is no single number that defines dry eye, which is why the assessment is a set of findings rather than one result.
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It measures how much tear fluid is produced over a set period using a small strip of paper placed inside the lower eyelid. It is one part of a dry-eye assessment and not a diagnosis on its own, because a normal tear volume can still leave the surface uncomfortable.
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It maps how light is distorted as it passes through your eye, including distortions beyond the ordinary prescription, called higher-order aberrations. Some surgical planning uses it to decide whether a customised treatment is appropriate.
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It measures how well you see objects that are faint rather than small. Two people can both read the 20/20 line and still differ in how well they see in fog, at dusk or in low-contrast light, and that difference shows up in this test.
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Often one long appointment, sometimes followed by a second short visit before surgery. The second visit exists where the cornea needs to be re-measured on a different day, where a contact lens stop period has to be respected, or where the first set of measurements was equivocal.
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An optometrist can detect signs of disease during an examination and will refer you onward, and the diagnosis and treatment of eye disease sits with an ophthalmologist, a doctor who has completed specialist training and can perform surgery.
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The cornea is measured, a lens design is chosen, and the lens is checked on the eye for fit, movement and vision. A proper fitting includes teaching handling and hygiene, and a review appointment to confirm the lens is still comfortable and the surface still healthy.
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Because lens implants are chosen from it. The power of an intraocular lens depends on how long the eye is and how strongly the cornea focuses, so a measurement of eye length, called biometry, is taken before cataract or lens-replacement surgery.
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Lenses, medication, food, makeup and travel arrangements.
Soft lenses are usually stopped for a few days before an assessment and rigid lenses for considerably longer, because contact lens wear changes the shape of the cornea and can make the measurements wrong.
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Preparation is mostly about stopping contact lenses for the period you were given, arranging not to drive home, following any instructions about makeup, perfume and medication, and having someone available afterwards.
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Eating normally is usually fine before laser vision correction, because sedation is rarely used. If your clinic plans to use sedation, it will give you fasting instructions, and those take priority.
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Tea and coffee are not usually restricted before laser eye surgery. If you are taking anything to help you relax, or if your clinic has advised otherwise, follow the clinic.
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Eye makeup is usually avoided immediately before surgery to reduce the chance of debris or bacteria reaching the treated surface. The period is a clinic instruction rather than a universal rule.
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Perfume and similar products are restricted because airborne particles from them can affect the laser’s environment and, in some facilities, the treatment room’s air quality requirements.
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No. Vision is typically blurred and light sensitivity is common immediately after treatment, so you need someone to take you home. The same applies after a consultation where your pupils were dilated.
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It is worth having someone with you for the journey home and for the first evening, when vision can be blurry and the eye may be uncomfortable. It also means details of the aftercare instructions are heard by two people.
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Tell the clinic about all of them, including anything bought over the counter and any supplements, with particular attention to blood thinners, acne medication such as isotretinoin, and medication for diabetes or autoimmune conditions.
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All of them, including anything you take occasionally. Two groups matter most: medicines that affect bleeding, and medicines that affect healing or the ocular surface, such as some acne treatments and certain hormonal medicines.
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Tell the clinic and expect the decision to be theirs. A heavy cold with coughing or fever is a common reason to postpone, because it makes keeping still harder and it is better to operate on a person who is well.
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What happens in the treatment room and immediately afterwards.
The day usually follows a sequence: a final check and confirmation of consent, numbing drops, the procedure itself with the eye held steady and you awake, a short period of observation, and then going home with written aftercare instructions.
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It is usually described as pressure or a sensation of something touching the eye rather than pain, because the eye is numb. Afterwards, grittiness, watering and light sensitivity are common for some hours.
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Arrange for someone to travel with you or to collect you. You should not drive yourself afterwards, vision is variable for some hours, and the clinic will be giving you instructions and drops while you are not at your sharpest.
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The first week, the first month, and what is expected rather than alarming.
Expect vision that is improved but fluctuating, some dryness or grittiness, light sensitivity, and halos around lights at night. Drops are typically used on a schedule for a period afterwards.
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Some blur is expected early and can come and go for weeks. Blur that is getting progressively worse, that is accompanied by pain, or that appears suddenly later on is not something to wait out.
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Light sensitivity is common in the first days and usually settles. Sunglasses help in the meantime, and the clinic will say how long it expects this to last.
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Halos and glare are commonly reported early after laser surgery and often reduce over the following weeks and months as the surface settles. Persisting or worsening night vision symptoms should be assessed rather than assumed to be normal.
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Postoperative dryness usually improves over months as the surface nerves recover, although the time varies between individuals and a pre-existing tendency can make it persist longer.
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Vision usually settles over weeks to a few months, and the prescription is not considered final until it has stopped changing. That is why enhancement decisions are made later rather than sooner.
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Showering is usually permitted early, with care to keep water and shampoo out of the eye. Rubbing the eye and letting water run into it are what the instructions are designed to prevent.
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Washing the face is usually fine soon afterwards, but splashing water directly into the eye and rubbing around the eye are avoided for a period. Your clinic will give you the specific interval.
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A single accidental rub is unlikely to cause harm, and the eye is usually more resilient than the instructions make it sound. Report it to the clinic if it was forceful or if your vision changed afterwards.
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This answer explains what the symptom commonly indicates. If it has come on suddenly, or is accompanied by pain or loss of vision, seek urgent care rather than waiting for an appointment.
Contact the clinic if your vision is getting worse rather than better, if you have significant pain, if there is discharge, or if you have any doubt at all. Asking early is not a nuisance.
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Which symptoms need urgent care
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Follow-up usually starts with a check the day after surgery or within a few days, then continues at intervals over months. The early visits look at healing; the later ones look at stability.
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Usually an antibiotic drop for a short period, an anti-inflammatory drop that is tapered over weeks, and lubricant drops for dryness that are used as needed. The exact combination and schedule are the clinic’s instruction for your eye and are not interchangeable between clinics.
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The shield is usually worn overnight for a period your clinic specifies, and sometimes at other times in the first days. Its purpose is to stop you rubbing the eye in your sleep rather than to protect it from light.
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Because the tear film fluctuates, and the surface of the eye is the first lens light passes through. Vision that is sharper after blinking or after drops and softer when the eye is dry is a tear-film pattern rather than a problem with the treatment.
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Many people use them regularly for the first weeks and then occasionally for months, and a minority use them long term. The pattern depends on your ocular surface before surgery as much as on the surgery itself.
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In principle yes, for cosmetic or occasional use, once the eye has healed and the clinic has confirmed the surface is healthy. People who were corrected to good distance vision usually find they no longer need them, and reading lenses are the more common reason to wear one again.
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Rearrange it rather than dropping it. The early visits are where a problem that is easy to treat is found before it becomes harder to treat, and they are also where the record of your healing is built, which matters if anything changes later.
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This answer explains what the symptom commonly indicates. If it has come on suddenly, or is accompanied by pain or loss of vision, seek urgent care rather than waiting for an appointment.
Contact the clinic that performed the surgery the same day. Redness and discomfort together, particularly with reduced vision or increasing pain rather than improving, are the pattern that needs to be looked at rather than waited out.
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Which symptoms need urgent care
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Getting back to ordinary life, and the timescales clinics work to.
Screens are usually permitted soon after surgery, and the practical difficulty is comfort rather than safety. Dryness can make prolonged screen use tiring for a while.
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Contact sports are deferred until the eye has healed, and the period depends on the procedure and on how much contact is involved. Protective eyewear is often advised when you return.
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Light exercise is often allowed within days, while heavy lifting and anything involving a risk of being struck are usually deferred. Sweat in the eye and straining that raises pressure are the reasons.
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Eye makeup is typically avoided for a short period after surgery so that particles and bacteria stay away from the treated surface. The clinic will give you the interval it uses.
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Travel is usually possible soon afterwards, and the practical considerations are dryness on a flight and having your first follow-up where the operating clinic can see you.
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What actually moves the price of vision correction, what a quote should contain, how insurance treats elective and medical eye surgery differently, and why two quotes are not comparable until you know what each one covers.
What each procedure tends to include, and what makes two prices differ.
There is no fixed price for LASIK in Dubai. Each clinic sets its own, and the total depends on the clinic, the surgeon, the technology used and what the quote includes.
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Laser eye surgery in Dubai is priced by the clinic rather than by a schedule, and prices differ between procedures, between clinics and between surgeons within the same clinic.
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SMILE is priced per clinic in Dubai, and the quote depends on the clinic, the platform used, the surgeon and which follow-up visits and medications are included.
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SMILE Pro is priced by each clinic, so the honest answer is that the range is wide and the only figure that binds anyone is the written quote you are given.
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Femto LASIK is priced per clinic, and it is usually quoted above a standard flap procedure because the femtosecond laser is a separate device from the excimer laser.
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PRK is priced per clinic in Dubai and is often quoted below flap procedures, largely because the treatment itself uses fewer devices, though the follow-up schedule can add visits.
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Both habits exist, and the difference changes the number by a factor of two. Ask explicitly whether the figure is per eye or for both, and get it written on the quote rather than confirmed over the phone.
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It depends on how the clinic quotes, and the two conventions produce the same treatment for very different headline numbers. Ask for the total for both eyes and for the cost of the second eye if the first has been treated.
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It can. A higher prescription takes more treatment time and, in some cases, more tissue, and some clinics price by range rather than by a single figure. If the advertised price is a starting price, ask what would move it for your measurements.
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What the assessment costs, and why some clinics fold it into a package.
It depends on the clinic. Some include the assessment in the surgical fee, some charge for it separately, and some charge separately but deduct it if you proceed.
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The cost of an eye test in Dubai depends on what the test covers. A refraction for glasses is priced differently from a comprehensive examination with dilation and imaging.
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Sometimes. Practices differ: some charge for the assessment and then deduct it from the procedure price if you book, some include it in a package, some charge it separately with no deduction. Ask before the appointment rather than after.
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They are usually inside the assessment fee rather than charged per test, and a clinic that prices them individually should be able to list what each one is. If a test is added after the first visit, ask what finding prompted it.
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The line items that turn a headline price into a real total.
A complete quote should state whether it covers the assessment, the procedure itself, medication, the follow-up visits, and any retreatment. Anything not stated is not included.
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Often they are included for a defined period, and how long that period lasts is one of the most important lines in any quote, because it determines who pays for anything found later.
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Sometimes. Postoperative drops are a real cost and are often listed separately, so it is worth asking whether they are supplied by the clinic or bought by you.
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A package name tells you a total; an itemised quote tells you what you are buying. The second is what you can compare between clinics, because two packages with the same total can contain different tests, different follow-up schedules and different policies on retreatment.
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Often it is deducted from the procedure fee if you proceed, and often it is charged whether or not you do. What matters is knowing which, because an assessment that is free until you commit is a different arrangement from a consultation fee.
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Because the visits cost the clinic money, and a clinic that does not include them in the price is charging for what is used rather than spreading the cost. Neither arrangement is wrong, and a clinic that includes visits should be able to say how many.
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When cover applies, and the payment options clinics offer.
Elective laser vision correction is usually not covered, because it is treatment for a refractive error rather than for a disease, and most policies exclude it explicitly.
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As with other elective refractive procedures, SMILE is usually excluded from standard health insurance in the UAE, though some employer plans include a refractive benefit and cover differs between policies.
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Many clinics in the UAE offer instalment plans or accept payment through providers that split the cost, and the arrangements differ between clinics.
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Occasionally, where the policy covers treatment abroad and pre-authorises it. For elective refractive surgery, most policies exclude it in any case, so the sequence is to check the exclusion first and the international cover second.
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Card and bank transfer are the ordinary methods, some clinics offer instalment arrangements through a finance provider, and direct insurance billing only applies where the procedure is covered and pre-authorised.
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Comparing clinics on substance rather than on headline figures.
The main reasons are the technology in use, the surgeon’s experience, how much of the total is bundled into one figure, the location and running costs of the facility, and how many follow-up visits are included.
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Price is one of the least informative things to compare, because the cheapest quote and the most expensive one are often not selling the same thing.
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It can be cheaper in some destinations, and the comparison only becomes meaningful once travel, accommodation, time off work and the cost of follow-up after you return are included.
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The risk is not that cheap treatment is bad. It is that an unusually low price usually means something has been left out, and the thing left out is often the assessment depth or the follow-up.
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Check what has been left out rather than what has been discounted. The common omissions are the assessment, the medication, follow-up visits beyond the first, and any provision for a second procedure if the result is not enough.
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Line by line, in writing, with the same questions asked of both: per eye or both, which tests, which medication, how many follow-up visits, what happens if the result needs a second procedure, and who is available if something goes wrong at the weekend.
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A factual account of what can go wrong after laser vision correction, how common each problem is in general terms, how it is managed, and why the phrase "is it safe" has a more useful version: safe for whom, and measured how?
Under-correction, over-correction, infection, inflammation and regression.
The main complication groups are dry eye, night vision symptoms such as glare and halos, imperfect correction leaving a residual prescription, and uncommon problems involving the flap, infection or inflammation.
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Most postoperative symptoms settle, but a small number of people are left with persistent dryness or persistent night vision symptoms, and rarer complications can leave a lasting change to the cornea or to vision quality.
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A residual prescription is one of the more common outcomes, and it may be small enough to leave alone, correctable with glasses, or eligible for further treatment once the eye has stabilised.
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Over-correction is possible, meaning the eye ends up long sighted rather than corrected for distance. It is one of the outcomes that follow-up measures for, and it can sometimes be addressed with further treatment.
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Regression means the prescription drifts back towards what it was before treatment. It relates to how the cornea heals and to changes in the eye over time, and it is more likely at higher prescriptions.
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Infection after laser vision correction is uncommon, and it is one of the reasons antibiotic drops and hygiene instructions are part of the routine aftercare. When it occurs it is treated with medication and needs prompt attention.
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Some inflammation is an expected part of healing, and aftercare usually includes drops to manage it. Inflammation that is excessive or located in the wrong place is a complication that a clinic looks for at follow-up.
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It can leave you with a result you are unhappy with: an under- or over-correction, a residual prescription, troublesome night vision, or dryness that persists. A catastrophic loss of vision is rare, and it is a different risk from an imperfect result.
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It is uncommon, and it is treated as urgent: the flap is repositioned by the surgeon, usually with a good result if it is dealt with quickly. This is the complication that does not exist after SMILE or PRK, because neither leaves a flap.
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What happens when the first result is not the final one.
Enhancement is a further treatment performed after the eye has stabilised, in order to correct a residual prescription from the first procedure.
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The "is it dangerous" questions, answered without either alarm or reassurance.
Your prescription, corneal thickness and shape, tear film, healing response and age all influence it, along with the technique chosen and how the eye is managed afterwards.
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Before surgery a clinic should explain the risks that apply to you specifically, what it does if something goes wrong, who to contact, how quickly you will be seen, and what is covered financially.
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That the procedure, its alternatives and its risks have been explained to you, and that you accept them. It is not a waiver of the clinic’s duty of care, and a consent discussion that happens in a corridor five minutes before treatment is not a consent discussion.
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What common eye symptoms usually mean, which ones are worth an appointment rather than worry, and which need urgent assessment today rather than a booking form.
Blur, dryness, redness, watering, floaters and strain.
Symptoms worth an appointment are the ones that persist, recur, or affect what you can do: ongoing blur, dryness that does not respond, redness that keeps returning, headaches with close work, or any change in vision that does not settle.
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Burning eyes most often point to a tear film problem, an irritant or an allergic reaction. Burning with reduced vision or significant pain is a different matter and should be assessed.
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Watery eyes often indicate an irritated surface rather than an excess of tears in the usual sense: dryness itself, allergy, an eyelid problem or a blocked drainage channel can all cause watering.
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Redness usually comes from dilated surface blood vessels, which happens with dryness, allergy, infection or simple fatigue. Redness that is painful, light sensitive or reduces vision needs prompt assessment.
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Discharge suggests an infective or allergic cause, and the type of discharge helps distinguish them: watery and itchy points towards allergy, thicker and persistent towards infection. Either way it is assessed rather than self-treated for long.
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Eyelid twitching is commonly benign and associated with tiredness, caffeine and stress. Twitching that spreads to other parts of the face, or that closes the eye involuntarily, should be assessed.
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This answer explains what the symptom commonly indicates. If it has come on suddenly, or is accompanied by pain or loss of vision, seek urgent care rather than waiting for an appointment.
New light sensitivity matters when it accompanies pain, redness or reduced vision, because that combination suggests inflammation or injury rather than ordinary discomfort. In that case, assessment should not wait.
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Which symptoms need urgent care
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Most commonly a stye, a chalazion or an allergic reaction. A painful red lump on the lid margin suggests a stye; a painless firm lump suggests a chalazion; itching with swelling on both sides suggests allergy. Swelling with fever, or with vision change, needs assessment.
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Tiredness affects the tear film, the steadiness of focusing and how much attention the brain gives to blur. An uncorrected prescription and an older focusing lens both make it more noticeable, which is why late-evening blur is a common way for a small prescription to announce itself.
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The signs that mean urgent assessment rather than a routine appointment.
This answer explains what the symptom commonly indicates. If it has come on suddenly, or is accompanied by pain or loss of vision, seek urgent care rather than waiting for an appointment.
Sudden loss of vision, in one eye or both, needs emergency assessment immediately rather than an appointment request. Several of the causes are treatable only within a limited window.
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Which symptoms need urgent care
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This answer explains what the symptom commonly indicates. If it has come on suddenly, or is accompanied by pain or loss of vision, seek urgent care rather than waiting for an appointment.
Severe eye pain that comes on suddenly needs urgent assessment. It can indicate raised pressure inside the eye, inflammation or injury, and it is not a symptom to manage with rest and observation.
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Which symptoms need urgent care
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This answer explains what the symptom commonly indicates. If it has come on suddenly, or is accompanied by pain or loss of vision, seek urgent care rather than waiting for an appointment.
Rinse the eye immediately with clean running water or saline for as long as is practical, then seek emergency care. Immediate irrigation matters more than waiting to be seen.
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Which symptoms need urgent care
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This answer explains what the symptom commonly indicates. If it has come on suddenly, or is accompanied by pain or loss of vision, seek urgent care rather than waiting for an appointment.
A significant injury to the eye, including a blow, a penetrating object or a foreign body, needs emergency assessment. Do not press on the eye or attempt to remove an embedded object.
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Which symptoms need urgent care
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This answer explains what the symptom commonly indicates. If it has come on suddenly, or is accompanied by pain or loss of vision, seek urgent care rather than waiting for an appointment.
A shadow or curtain moving across part of the vision, particularly with flashes or a sudden increase in floaters, needs urgent assessment. It can indicate a retinal problem that is more treatable the sooner it is seen.
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Which symptoms need urgent care
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This answer explains what the symptom commonly indicates. If it has come on suddenly, or is accompanied by pain or loss of vision, seek urgent care rather than waiting for an appointment.
The symptoms that need urgent care are sudden loss of vision, sudden severe eye pain, a sudden increase in floaters with flashes, a curtain or shadow across the vision, chemical exposure, eye injury, and new double vision.
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Which symptoms need urgent care
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How often to have an examination, what actually helps protect vision over a lifetime, and how general health conditions such as diabetes, blood pressure and smoking show up in the eye.
Intervals, what a full examination covers, and why it is not just a prescription check.
The useful measures are unglamorous: regular eye examinations, controlling blood sugar and blood pressure if they apply to you, not smoking, protecting the eyes from ultraviolet light and injury, and getting symptoms that persist checked.
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Adults without symptoms or risk factors are generally advised to have an examination every couple of years, and more often where there is a relevant condition such as diabetes, a family history of glaucoma, or a higher prescription.
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They do not change a refractive error, and they can help comfort during sustained screen work by breaking the pattern of staring. Exercises designed for a specific condition such as convergence insufficiency are prescribed and supervised, which is a different thing from a general routine.
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What diet and supplementation do and do not do for vision.
Diet affects eye health mainly through general health: blood sugar, blood pressure and cardiovascular risk all show up in the eye. Specific nutrients are more clearly relevant in particular conditions than as a general protection.
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For age-related macular degeneration specifically, certain antioxidant and pigment combinations have been studied in supplementation trials. For eyes in general, the clearest nutritional advice is the same as for the rest of the body.
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For most people with a balanced diet, there is no evidence that they improve vision or prevent common eye disease. Formulations containing specific vitamins and minerals have a role in particular macular findings, and that is a prescription decision made after an examination rather than a supplement decision made in a shop.
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Diabetes, blood pressure, medication and sleep.
Diabetes can affect eyesight in several ways: temporary blur from changing blood sugar, earlier cataract, and diabetic retinopathy affecting the retinal blood vessels. Retinopathy can progress without symptoms.
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High blood pressure can affect the blood vessels in the retina and is a risk factor for several eye conditions, which is one reason an eye examination can reveal something about general health.
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Smoking is associated with an increased risk of cataract and of age-related macular degeneration, among other conditions, and it affects the circulation that the retina depends on.
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Lack of sleep commonly affects the comfort and stability of vision, largely through the tear film, rather than the structure of the eye. Blur and dryness after poor sleep are usual.
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Dehydration can contribute to dry eye symptoms, since the tear film is mostly water, and it usually acts alongside other factors rather than on its own.
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More often than people without it, and the interval is set for you rather than for everyone: it depends on whether retinopathy has been seen and how well your blood sugar and blood pressure are controlled. The screening interval is a clinical instruction, not a general rule.
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It can. Hormonal changes affect the tear film and can change the refractive state slightly, which is why vision that has shifted during pregnancy is usually re-measured afterwards rather than corrected while it is happening. Some conditions, including diabetic eye disease, need closer monitoring during pregnancy.
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Some can. Steroid preparations can raise eye pressure and cause cataract over time, a few medicines affect the retina or the optic nerve, and several classes dry the ocular surface. Tell any eye clinician what you take, including anything prescribed by another doctor.
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Sunglasses, contact lens hygiene and everyday habits.
Ultraviolet exposure is associated with damage to the surface of the eye, with cataract and with growths on the conjunctiva, and the effect accumulates over a lifetime.
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Wearing sunglasses outdoors is a reasonable habit in a high-ultraviolet environment, and the useful detail is the specification rather than the style: lenses that block ultraviolet light properly.
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Protection means sunglasses that block ultraviolet light, a hat with a brim, and avoiding the brightest part of the day where practical. Contact lenses offering ultraviolet protection are a supplement to sunglasses, not a replacement.
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Protective eyewear is worth using for anything that can put a particle or a chemical in the eye: power tools, gardening, workshop tasks, some sports and handling cleaning chemicals.
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It does not damage them. It strains them, which means tiredness, a dry surface from blinking less, and sometimes a headache. The next morning your eyes are unchanged; the discomfort during the evening is real.
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When children should be tested, what the common findings mean, how short sightedness is now managed rather than simply corrected, and the signs that should prompt an appointment.
When to start, how often, and what is checked.
Children should be screened early, in the preschool years, and again during school. Development of the visual system is largely complete in early childhood, which is why some findings matter much more when they are picked up young.
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How often a child needs an examination depends on their age and on what has been found before. A child with a normal examination and no risk factors is usually reviewed at longer intervals than one who wears glasses or has a family history.
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A child should see an ophthalmologist when a squint or lazy eye is suspected, when vision does not improve as expected with glasses, after an eye injury, or when there is a family history of a significant childhood eye condition.
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Yes, and earlier if anything is noticed. A child with reduced vision in one eye will rarely report it, because they have no comparison to make. Finding it before school matters because some conditions are more treatable while the visual system is still developing.
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Common diagnoses and what they mean for the child.
The signs worth acting on are squinting, sitting very close to a screen or book, holding things close, tilting the head, complaining of headaches after reading, or one eye turning.
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Squinting can improve focus temporarily, which is why it can indicate an uncorrected refractive error, and it can also be a response to bright light or to discomfort. It is a reason for an examination rather than a diagnosis.
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Headaches with close work in a child often occur with an uncorrected refractive error or with a focusing or alignment problem, since the eyes are working harder than they should.
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Sitting very close to a screen can simply be what children prefer, and it can also be a sign of short sightedness. It is worth an eye examination rather than management by moving the chair.
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Lazy eye, or amblyopia, is reduced vision in an eye that is otherwise healthy, caused by the visual system not developing normally in early childhood. It is treated more effectively the earlier it is found.
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A squint, or strabismus, is when the eyes do not point in the same direction. It can be constant or intermittent, and it can affect how vision develops in the misaligned eye.
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There is no fixed age at which contact lenses become suitable for children. The deciding factors are whether the child can handle the lenses and the hygiene routine reliably, and what the clinical reason for lenses is.
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Conjunctivitis in children is usually self-limiting or easily treated. It should be assessed if the eye is painful, if vision is affected, if the child is unwell with it, or if it is not settling.
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This answer explains what the symptom commonly indicates. If it has come on suddenly, or is accompanied by pain or loss of vision, seek urgent care rather than waiting for an appointment.
A child needs urgent care for a chemical in the eye, an obvious injury, sudden loss of vision, sudden onset of a squint, severe pain, or a red eye with a contact lens in place.
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Which symptoms need urgent care
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Slowing short sightedness in children, and the options used.
Short sightedness in children results from the eye growing slightly too long for its focusing power, with both inherited tendency and environmental factors contributing.
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Progression of short sightedness in children can be slowed, and options include specific spectacle lens designs, contact lens approaches and medication drops. Suitability and monitoring are clinical decisions.
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The two lifestyle factors that show up consistently.
Screen time in children is associated with short sightedness in research, though the relationship is tangled with how much time is spent indoors and on near work generally rather than on screens alone.
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Time outdoors is consistently associated with less development and slower progression of short sightedness in children, and it is one of the few protective factors with a practical recommendation attached.
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Screen time, eye strain and blue light, separated into what the evidence supports and what it does not, plus the practical adjustments that genuinely reduce discomfort.
Why screens tire eyes, and what reduces it.
Phone use can cause temporary blur, largely from dryness and from sustained near focus, and it does not cause permanent refractive error in adults on its own.
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Yes. Digital eye strain is a recognised pattern of symptoms including aching eyes, headache, dry or gritty eyes and blurred vision after prolonged screen work.
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The measures that help most are taking regular breaks that involve looking at something distant, positioning the screen slightly below eye level at roughly arm’s length, increasing the text size so you are not straining, and treating any underlying dryness.
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What the evidence supports, and what it does not.
There is no established evidence that the blue light from screens damages the eye. Blue light does affect sleep timing, which is a real effect, and screen-related discomfort is better explained by blinking and focus than by wavelength.
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Blue light filtering lenses have not been shown to reliably reduce eye strain or prevent eye damage from screen use. Some people report that they feel more comfortable, and that is a legitimate reason to wear them, but it is not the same as a protective effect.
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Whether screen use affects your eyesight itself.
Screen time does not damage the structure of the eye on the evidence available. It does cause real discomfort, through reduced blinking, sustained near focus and posture, and those effects are what people mean when they say their eyes feel damaged.
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In adults, screen use does not cause refractive error to progress. In children the picture is different and is still being studied, with near work and limited outdoor time both associated with the development of short sightedness.
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How eye care is regulated in Dubai and the wider UAE, who to check credentials with, where vision correction procedures are available, and how to compare clinics on the things that are actually checkable.
Availability, licensing and choosing a clinic in Dubai.
LASIK and other refractive procedures are performed at licensed ophthalmology facilities across Dubai, including hospital eye departments and dedicated refractive clinics.
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SMILE is offered at a number of Dubai facilities, and because it requires a specific laser platform rather than being available on every excimer system, not every clinic that offers LASIK offers SMILE.
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Choose on what the clinic measures and who operates, not on the clinic’s branding or its advertised price. Those two answers predict the quality of care more reliably than anything on a website.
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Check their licence and scope of practice with the health authority, ask how many of your specific procedure they perform, and ask who handles your follow-up. Those three answers are checkable; a website biography is not.
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Consultation availability varies by clinic and season, and busy periods can mean waiting longer for a specific surgeon. Booking directly with the clinic will give you a real answer rather than an estimate.
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Usually not. Eye clinics in Dubai generally accept direct bookings, and many refractive practices work entirely that way. A referral matters mainly for insurance purposes, where the policy may require one before it pays for a consultation.
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Many clinics offer evening or weekend appointments, and surgical lists are often run at weekends. Availability varies between practices, and it is worth asking when you book rather than assuming, particularly if someone needs to travel with you.
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Identification and your insurance card if you have one, your current glasses or the prescription for them, any previous eye records or scans, a list of your medications, and the name of your contact lens type and how long you have been out of them.
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Most practices in Dubai work in English and Arabic, and a large share also work in Hindi, Urdu, Russian, Mandarin or other languages depending on the community they serve. If you need to be examined and explained to in a particular language, ask when booking.
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The same questions for the capital.
Yes, refractive surgery including LASIK is available in Abu Dhabi, and the same questions about assessment, surgeon and follow-up apply as anywhere else.
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Availability and costs across the emirates.
Refractive surgery is available in the major emirates, with the largest concentration of facilities in Dubai and Abu Dhabi.
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SMILE is available in the UAE at facilities that have the specific laser platform it requires, which is a smaller set than the facilities offering refractive surgery in general.
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Prices are set per clinic rather than by the emirate, so there is no UAE-wide figure. Differences between emirates are smaller than differences between clinics in the same emirate.
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Standard UAE health insurance generally excludes elective refractive surgery, though some employer plans include a refractive benefit and policies differ.
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Yes. Residency is not a requirement for treatment, and residents are treated under the same licensing and standards arrangements as anyone else.
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Visitors can be examined and treated at licensed facilities in the UAE, and many clinics see international patients routinely. Practical arrangements such as how long you stay are the part that needs planning.
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Both have licensed ophthalmology facilities, and the standard of care depends on the individual clinic rather than on the emirate. Dubai has a larger concentration of facilities, which affects choice rather than quality.
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Yes. Sharjah has licensed ophthalmology facilities offering refractive surgery, and residents there commonly travel to Dubai or Abu Dhabi for procedures requiring a specific platform or surgeon.
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A health card gives access to the public health system; what it covers depends on your eligibility category and on whether the treatment is considered medically necessary. Elective refractive surgery is generally not part of public provision.
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Medically necessary eye care, such as treatment of glaucoma, diabetic eye disease or a cataract that affects vision, is generally covered by an active policy. Elective vision correction is usually excluded, and the exclusion is written into the policy rather than decided by the clinic.
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Yes. Patients move between emirates for treatment routinely, particularly for procedures that need a specific platform. The practical question is follow-up: plan how you will attend the early visits, which usually happen in the first week and again in the first month.
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Yes, at hospital ophthalmology departments and at private clinics in every emirate. Availability is not the constraint; which lens designs a given facility offers is, and that varies more than the operation does.
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Who licenses what, and how to check a credential.
Yes. Practitioners and healthcare facilities in Dubai are licensed, and a surgeon’s ability to perform a specific procedure depends on their licensed scope of practice as well as their medical licence.
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Healthcare facilities in Dubai are regulated by the Dubai Health Authority, and facilities elsewhere in the UAE fall under the relevant emirate’s authority or the federal Ministry of Health and Prevention, depending on the licence.
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Verification means checking the licence with the authority that issued it, and confirming that the procedure you are considering falls within the practitioner’s licensed scope rather than only within their employer’s licence.
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Ask the clinic for its facility licence number and the surgeon’s registration, then verify them with the health authority that issued them: the Dubai Health Authority for Dubai, the Department of Health for Abu Dhabi, and the Ministry of Health and Prevention for the other emirates and for federal oversight.
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The Dubai Health Authority licenses health facilities and health professionals in Dubai and sets the standards they work to. Standards for the country as a whole are set at federal level by the Ministry of Health and Prevention, and each emirate has its own authority for its own facilities.
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Facilities are licensed by their own emirate’s health authority, with federal standards applying across the country. So a licence held in Dubai is not a licence to practise in Abu Dhabi, and a credential you have checked in one emirate tells you about that emirate.
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For readers outside the UAE considering treatment in Dubai: remote consultation, how much time to allow, what to send ahead, and how aftercare is arranged once you are back home.
Whether to travel, and how to plan a trip around treatment.
Yes. Clinics in Dubai see international patients routinely, and the medical part of the process works the same way it does for a resident. What differs is the sequencing and how follow-up is arranged afterwards.
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Yes, where the clinic has the relevant platform and your measurements support the procedure. Availability of the technique and your suitability for it are two separate questions, and both need answering before you book.
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Dubai has a large concentration of licensed ophthalmology facilities and sees international patients routinely, which is a genuine practical advantage. Whether it is right for you depends on the specific clinic and surgeon rather than on the city.
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Yes, and it is common. The one thing to avoid is planning a packed itinerary directly after treatment, because the first evening and day are not the time for a busy schedule.
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Yes, and it is worth doing if you are travelling alone, because you should not drive yourself afterwards and the first evening is more comfortable with someone there.
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Ask whether the assessment and the procedure can be scheduled in one trip, which surgeon will operate, what is included in the quote, which check happens before you fly, and how follow-up will work once you are home.
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The usual route is to contact the clinic directly, send existing measurements or scans, agree an assessment date, and then decide about surgery after the examination rather than before it.
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It is a reasonable option if the clinic and surgeon are a genuine match for your eye, and factors that only the clinic can tell you: assessment depth, the surgeon’s experience and the follow-up arrangement.
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In most cases an ordinary tourist or visit visa is enough, and whether you need one at all depends on your nationality. Entry rules are set by the UAE authorities and change, so the reliable source is the official immigration channel for the UAE rather than a clinic’s website.
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Most clinics take card payment in person and bank transfer in advance, and a deposit is common where a surgical slot is being reserved. Ask about the currency the quote is in and who carries any conversion cost before transferring anything.
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Often yes, and it needs planning: two assessments, two sets of measurements and two treatment slots, and a rule about who drives or supervises whom on the day. Clinics can usually schedule it, and the earlier you ask, the easier it is.
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Flights, accommodation for longer than you might expect because of the follow-up visit, travel to and from the clinic on the day you cannot drive, and the possibility of a second visit if the assessment asks for one.
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It happens, and it is why some clinics will review your records in advance. If it does, the clinician should explain what ruled it out and whether a different procedure or a later visit would change the answer, and you should ask for that in writing.
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Many practices with international patients arrange hotel rates, airport transfers and a driver on the treatment day, and they are used to answering these questions. Ask early: the useful part is knowing who meets you and who takes you home afterwards.
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What can and cannot be done before you arrive.
A remote consultation can cover history, your current prescription, general options and what the assessment will involve. It cannot replace the measurements that decide suitability, because those need equipment and your physical presence.
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Sequencing the assessment, the procedure and the first checks.
The minimum sensible stay is long enough to attend the first postoperative check, which is the visit that confirms the eye is healing as expected before you fly. Ask the clinic what it requires rather than planning from a general figure.
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The practical sequence is an assessment day, a decision, a treatment day, and at least one check afterwards. How many calendar days that becomes depends on how the clinic spaces those appointments.
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Often yes, if the clinic is willing to schedule the assessment and treatment close together and your measurements support the procedure. Some clinics deliberately separate them, which is also a reasonable policy.
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Plan around the appointment sequence rather than around the procedure. The assessment, the treatment and the first check are the fixed points, and the recovery period is the flexible one.
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The assessment has to come first, and it cannot be skipped or replaced by a video call, because it is where your cornea is measured. Most visitors are assessed on one day and treated on the next, which means arriving a day before the appointment rather than on the morning of it.
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Coordinating checks with a doctor in your own country.
Flying is generally possible soon after surgery, but most clinics want to see you once before you travel. The interval is the clinic’s decision and depends on how your eye looks at that check.
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Follow-up after you return home is usually split: the operating clinic reviews you before you leave and remains available remotely, while routine checks are done by an eye care professional where you live.
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Many will share your operative notes, measurements and treatment parameters with a practitioner you nominate, which is what makes local aftercare straightforward.
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The first step is a local examination, and the second is contacting the operating clinic with what was found. Rarely is a return trip needed for a routine problem.
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Usually yes for a short trip, and worth arranging deliberately: ask the clinic for enough of each drop to cover the period until your local doctor can prescribe them, and carry them in hand luggage with the prescription or a letter.
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It is a question to settle before booking, not after. Ask whether an enhancement would be included, discounted or charged in full, whether it has to be performed by the same surgeon, and whether travelling back for it is expected.
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Flying itself does not damage a treated cornea. The issues are the very dry cabin air, which makes an already dry surface uncomfortable, and the timing of your first follow-up visit, which should happen before you leave. Long-haul flights are usually planned after that visit rather than instead of it.
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A named person who will see you if a concern arises after you return, and a copy of your records sent to them. Arranging this in advance is what turns “who do I contact at home” from a problem into a phone number.
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What to bring, and what to send in advance.
Yes, and it helps. Sending previous measurements and scans lets the clinic review whether a trip is likely to be worthwhile before you commit to flights.
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Bring identification and your travel documents, your current glasses prescription, details of contact lens wear, a medication list, and any previous eye records or imaging.
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The operative note, the measurements taken before and after surgery, the name of the procedure and platform, the full drop schedule with dates, and a contact for questions. Ask for these before you fly rather than requesting them by email months later.
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No answer matches that yet. Try a simpler phrase, or ask the question directly. Questions that come up often get written up and added here.
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How much each procedure costs depends on the clinic, so this table shows what is verified rather than what is typical. Where no verified figure exists yet, it says so.
| Procedure | Basis | Price |
|---|---|---|
| LASIK | Per eye, flap-based laser correction | Varies by clinic |
| Femto LASIK | Per eye, laser-created flap | Varies by clinic |
| SMILE | Per eye, lenticule extraction | Varies by clinic |
| SMILE Pro | Per eye, SMILE on a newer platform generation | Varies by clinic |
| PRK and TransPRK | Per eye, surface treatment | Varies by clinic |
| Implantable lens (phakic IOL) | Per eye, lens inserted without removing the natural lens | Varies by clinic |
| Cataract surgery | Per eye, including a standard intraocular lens | Varies by clinic |
| Refractive assessment | Per visit, including corneal imaging where stated | Varies by clinic |
| Comprehensive eye examination | Per visit, with dilation and imaging where stated | Varies by clinic |
Figures are shown in UAE dirhams. Where no verified figure exists, the table says so rather than estimating. No figure in this table has been verified from a named clinic's written quote yet, so every row reads “varies”. That is the honest answer rather than a missing one: there is no published tariff for elective refractive surgery in the UAE, and the only binding figure is the quote you are given.
Most eye symptoms can be seen routinely. A few should not wait for an appointment, and they are worth recognising before you need to.
Sudden loss of vision, sudden severe eye pain, a sudden increase in floaters with flashes of light, a shadow or curtain across part of the vision, a chemical in the eye, an eye injury, or new double vision all need urgent assessment rather than a routine booking.
This knowledge base explains what symptoms commonly indicate. It cannot examine your eye and it does not diagnose. If something on this list is happening now, seek emergency care.
Answers are held as structured data rather than written into pages, which is what makes a base of this size maintainable. A few consequences worth knowing as a reader.
How we decide what we can and cannot state Full medical disclaimer
Everything in this knowledge base is general educational information. It is not a diagnosis, it does not replace an examination, and it cannot tell you whether a treatment is suitable for your eyes. Individual recommendations vary with your measurements, your history and your circumstances. Only a qualified ophthalmologist who has examined you can decide what is appropriate.
The emirate where most of the UAE refractive surgery capacity is, and the one most international patients travel to. Licensing, clinic choice and what a quote should contain are the local questions.
The UAE capital has its own health authority and its own licensed facilities. The clinical questions are the same as in Dubai; the licence to check and the practicalities are not.
The country-level view: which procedures are available, how the emirates differ, how insurance usually treats refractive surgery, and who regulates what.
For readers abroad weighing treatment in the UAE: what can be done remotely, how much time to allow, what to send ahead, and how follow-up works once you are home.
The eye focuses light in front of the retina, so near objects are clear and distant ones are blurred. It is the refractive error most commonly treated with laser vision correction.
The natural lens becomes cloudy, so vision loses contrast and sharpness. It is treated by replacing the lens, and the lens chosen at that point is what decides reading and distance correction afterwards.
The tear film is unstable or insufficient, so the surface of the eye is uncomfortable and the vision can fluctuate. It matters before surgery because it is also one of the things refractive surgery can temporarily make worse.
Progressive damage to the optic nerve, usually associated with eye pressure. It is silent for a long time, which is why it is found by examination rather than by noticing something.
Sharjah sits beside Dubai, and that shapes the practical decision: many residents cross the boundary daily, so where the surgery and its follow-up checks happen is the question that matters most.
How the Dubai market is organised, what a licence actually confirms, how pricing is disclosed here, and the questions worth asking before an assessment is booked rather than after.
What a routine eye test in Dubai covers, how it differs from the assessment before laser surgery, and when a symptom needs something faster than a scheduled appointment.
Routine eye care across the Emirates: what a check covers, when to have one, what the climate does to eyes, and which symptoms are worth acting on the same day.
We prefer primary sources. Where a claim comes from a manufacturer, a single study or a regulator, it is labelled as such below.
Condition-by-condition eye health information from a US government research institute, written for patients rather than for clinicians.
Used for Plain-language explanations of eye conditions and their symptoms; Healthy vision and screening guidance.
Link checked 23 September 2026
Patient-facing material from the largest ophthalmology professional body, covering conditions, tests and treatments outside refractive surgery.
Used for Cross-checking patient-facing explanations of non-refractive eye conditions; Describing what tests such as dilation and OCT involve.
Link checked 23 September 2026
A large professional body publishing both clinical guidance and plain-language patient education on refractive surgery.
Used for Cross-checking patient-facing explanations of refractive surgery.
Link checked 22 September 2026
The UK professional body for ophthalmologists, which publishes standards and commissioning guidance for refractive surgery services.
Used for What good preoperative assessment and consent look like.
Link checked 22 September 2026
The equivalent clinical reference chapter for LASIK, used so that comparisons describe both procedures symmetrically.
Used for How LASIK creates and manages a corneal flap; LASIK complication categories.
Link checked 22 September 2026
A continuously updated clinical reference chapter covering SMILE indications, technique, outcomes and complications, written for clinicians.
Used for How the lenticule is created and removed; Indications and contraindications; Complication categories; Corneal biomechanics compared with flap-based surgery.
Link checked 22 September 2026
Clinical guidance on when cataract surgery is indicated, what should be discussed before it, and what follow-up is expected.
Used for When cataract surgery is considered appropriate rather than cosmetic timing; What patients should be told before cataract surgery.
Link checked 23 September 2026
The WHO overview of vision impairment, including the conditions that account for most avoidable sight loss worldwide.
Used for Framing uncorrected refractive error as a public health issue rather than a lifestyle one.
Link checked 23 September 2026
Systematic reviews and meta-analyses. Useful for readers who want to know how strong the pooled evidence is, not just what one trial found.
Used for Helping readers judge the strength of the evidence base.
Link checked 22 September 2026
The Dubai Health Authority’s licensing portal, including the public medical registry used to check that a facility and a practitioner hold a current Dubai licence.
Used for How to verify a Dubai clinic licence; How to verify a surgeon’s licence and scope of practice; Regulatory context for the Dubai guide.
Link checked 22 September 2026
A Dubai Health Authority circular addressing how laser refractive surgery sits within the licensed scope of practice for ophthalmologists in Dubai.
Used for Explaining that refractive surgery is a regulated activity in Dubai.
Link checked 22 September 2026
The federal health authority for the UAE, relevant to facilities licensed outside the Dubai Health Authority system.
Used for Explaining which authority licenses which facility.
Link checked 22 September 2026