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Procedure

SMILE Pro Procedure: What Actually Happens, Step by Step

Most descriptions of this procedure start in the treatment room. That is too late. The stages that decide your outcome happen earlier, at the assessment, which is why this timeline starts at preparation and only reaches the laser at stage five.

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SmilePro.ae editorial team
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Quick answer

SMILE Pro has four clinical phases: an ophthalmic assessment and treatment planning; a femtosecond laser creating the lenticule and a small incision; removal of the lenticule through that incision; and follow-up during which refraction settles. Topical anaesthetic drops are used, both eyes are often treated in one session, and vision is usually blurred afterwards while improving over the following days.

Individual experience varies considerably, and your surgeon's specific instructions take precedence over any general description, including this one.

Anaesthesia
Topical drops
Aware during treatment
Yes
Both eyes
Often same session
Immediately after
Blurred, watery
Driving home
Not permitted
Decisive stage
The assessment

The full timeline

Ten stages, from the days before treatment through to the first follow-up appointment. Each one lists what is actually happening, what patients commonly report at that point, practical points, and the questions worth asking there.

SMILE Pro, stage by stage

Use the stage buttons to move through the timeline, or show all stages at once. On a phone, all stages appear in sequence.

  1. Preparation

    Before the day of treatment

    Contact lenses are usually left out for a period beforehand, and the clinic will give you specific instructions about drops, makeup and medication.

    Contact lenses press on the cornea and change its shape, which distorts the measurements used to plan your treatment. That is why clinics ask you to stop wearing them for a set period first. The required period differs between soft, toric and rigid lenses, so follow the instruction your clinic gives rather than a general rule from the internet.

    Practical points

    • Bring your previous prescriptions or spectacle records if you can: they are useful evidence of how stable your refraction has been.
    • Tell the clinic about every medication you take, including anything bought over the counter, and about any supplements.
    • Arrange transport home. You will not be driving yourself.
    • Ask whether anyone needs to stay with you afterwards, and for how long.

    Worth asking

    • Exactly how long must I leave my contact lenses out, for my lens type?
    • Which of my medications, if any, do you want me to pause?
    • What should I have at home ready for the first evening?
  2. Assessment

    The consultation and eye examination

    A comprehensive assessment maps your refraction, corneal shape and thickness, ocular surface and overall eye health. Suitability is decided here.

    This appointment is the most important part of the whole process. It is where the measurements that determine whether surgery is safe and appropriate for you are taken. A clinic that offers to skip or compress this step in order to book a treatment date is telling you something about how it operates.

    Practical points

    • Expect the assessment to take substantially longer than a routine eye test. Ask how long to allow.
    • Corneal topography, pachymetry, refraction, tear film assessment and a dilated examination are the core components. Ask which of these are included.
    • You may be given dilating drops, which blur your near vision and make bright light uncomfortable for several hours. Plan around that rather than driving afterwards.
    • Ask for your measurements in writing. This is your data, and you will want it later.

    Worth asking

    • What are my corneal thickness and topography results, in numbers?
    • What is the tear film assessment showing, and does anything need treating first?
    • Would you operate on your own eye with these measurements?
    • What would make you decide not to operate?
  3. Planning

    Eye measurements and treatment planning

    Your refraction and corneal data are used to calculate the lenticule shape and the treatment parameters for each eye.

    Refraction is not always identical from one visit to the next, and the ocular surface affects the reading. Some surgeons repeat measurements to confirm they are consistent before planning treatment. This is a sign of care, not indecision.

    Practical points

    • If your refraction differs between visits, ask whether it should be repeated before treatment is planned.
    • If your ocular surface needs treatment first, that may add time before surgery. That sequencing is usually deliberate.

    Worth asking

    • Were my measurements consistent between visits?
    • Is there any reason to repeat or confirm anything before we proceed?
  4. Day of treatment

    Arrival and preparation

    Anaesthetic drops are instilled, the eye is cleaned and prepared, and any final checks are made before you enter the treatment room.

    Topical drops are used rather than injections. You will be awake and able to follow instructions throughout, which is part of the point: the surgeon needs your cooperation to keep the eye positioned.

    Commonly reported by patients

    Most people describe the anaesthetic drops as mildly stinging for a moment, then nothing.

    Practical points

    • Wear comfortable clothing and no eye makeup, perfume or lotion around the eyes.
    • Leave jewellery and anything you do not need at home.
    • Expect a final confirmation of your details and your consent before treatment. Read it, even if you have read it before.

    Worth asking

    • Who will be in the room, and who is actually operating?
    • What happens if I need to stop part way through?
  5. Treatment

    The laser phase and lenticule removal

    The femtosecond laser creates the lenticule and the incision. The surgeon then separates and removes the lenticule, usually taking only a short time per eye.

    A suction device holds the eye steady against the laser interface while the laser works. Then the surgeon uses fine instruments to separate and withdraw the lenticule through the small incision. There is more than one way to do that step, and surgeons differ in which they prefer.

    Commonly reported by patients

    Patients commonly report pressure and a suction sensation, awareness of lights, and a strong urge to look away. Pain is usually not reported during the laser phase because of the anaesthetic drops. Vision is typically blurred and watery immediately afterwards.

    Practical points

    • You will be asked to look at a fixation light and to keep still. Small eye movements are expected and the system accounts for them.
    • Tell the team immediately if you feel anything sharp or painful, rather than waiting for it to finish.
    • Both eyes are often treated in the same session, but this is a clinical decision.

    Worth asking

    • How many of these procedures do you personally perform each month?
    • What is your rate of needing to stop and reschedule a treatment?
  6. Immediately after

    In the recovery area

    You stay in the clinic for a short observation period. Drops are usually started, and you are checked before being allowed to leave.

    The team is looking for anything requiring immediate attention and making sure you have understood the drop schedule. This is a good moment to write down your questions rather than relying on memory later.

    Commonly reported by patients

    Blurred, watery, gritty vision is commonly reported at this point. Some people notice an improvement within the first hour or two; others take longer.

    Practical points

    • Do not rub the eye, however much it itches. Ask what you should do instead if the urge is strong.
    • Make sure you know which drop goes in which eye, how often, and for how long.
    • Keep the written instructions and the clinic’s out of hours contact number somewhere you can find them in the dark.

    Worth asking

    • What number do I call out of hours if something worries me?
    • What symptoms mean I should be seen urgently rather than waiting?
    • Which drops, in what order, and for how long?
  7. Same day

    Going home

    Someone else drives. Most people rest with their eyes closed for a period, and many sleep.

    Resting with the eyes closed in the first hours is the most commonly given advice and the most commonly ignored. Understanding why it helps (it reduces dryness and irritation while the surface settles) makes it easier to follow.

    Commonly reported by patients

    Vision is often described as hazy or foggy in the first hours, with glare and halos around lights. Many people choose to sleep through this period.

    Practical points

    • Arrange for someone else to drive, and not just because of the anaesthetic.
    • Take the drops exactly as instructed, including the ones that sting. They are usually the important ones.
    • Expect to want to keep your eyes closed. Sleep is a legitimate use of the evening.

    Worth asking

    • Should I wake to take drops overnight, or can I sleep through?
  8. First night

    The first night

    Protective shields or goggles are usually worn overnight to stop you rubbing the eye in your sleep.

    Rubbing an eye that has just been operated on is one of the few things a patient can do to genuinely damage the result, which is why the shields exist. They are temporary and they matter.

    Commonly reported by patients

    Glare and halos around lights are commonly reported in the evening. Vision may seem better than expected, or worse, or different in each eye.

    Practical points

    • Wear the protection you were given, even though it is uncomfortable. Set drops in a known place for the night.
    • Do not be alarmed if vision differs between the two eyes. This is common and usually settles.

    Worth asking

    • If my two eyes feel very different tomorrow, at what point should I call?
  9. First week

    The first week

    Vision improves and fluctuates. Follow-up appointments begin. Screens, driving and exercise are governed by your surgeon’s instructions.

    This is the period where expectations and reality most often diverge, because vision is good enough to function but not yet stable. Reading text can be harder than expected in the early days, and screen work can feel tiring.

    Commonly reported by patients

    Fluctuating sharpness during the day, dryness or grittiness, sensitivity to light, and halos or starbursts around lights at night. Usually improving but not linear.

    Practical points

    • Use lubricating drops as instructed. Keep them with you rather than at home.
    • Take breaks from screens. Blink deliberately.
    • Follow the specific guidance you were given on driving, exercise, swimming and makeup rather than a generic rule.

    Worth asking

    • When can I resume my specific sport or activity?
    • What should I do if my vision seems to get worse rather than better?
  10. Follow-up

    Follow-up appointments

    Checks are usually scheduled early, then spread out over the first months as refraction stabilises.

    The early appointments check healing and the ocular surface. The later ones assess where your refraction has actually settled, which is the point at which a residual prescription becomes a meaningful conversation rather than a temporary fluctuation.

    Practical points

    • Ask at the first follow-up what the full schedule looks like, so you can plan around work and travel.
    • Attend even if everything feels fine. Some findings are only visible on examination.
    • If you are moving away or travelling, ask how follow-up will be arranged and who will hold your records.

    Worth asking

    • What is the complete follow-up schedule, and what does it include?
    • What follow-up is included in the price, and what is charged separately?
    • If I am outside the UAE, what are my options?

What does SMILE Pro feel like?

The eye is numbed with topical anaesthetic drops, so the laser phase is usually experienced as pressure and a suction sensation rather than pain. There are no injections around the eye. People commonly describe being aware of lights, feeling a firm pressure on the eye, and an urge to look away from the fixation light.

Immediately afterwards, blurred and watery vision with a gritty or scratchy feeling is normal, and it is usually the most uncomfortable part of the whole process. Vision is typically at its least predictable during the first hours and days.

Experience is not outcome

How a treatment feels tells you very little about how well it went. Patients who report an easy, uneventful procedure sometimes have residual prescriptions, and patients who found it uncomfortable sometimes land exactly on target. Do not calibrate your expectations on comfort.

What patients commonly report

Grouped from descriptions patients give, with the caveat that this is reported experience rather than a prediction of yours. Individual experiences vary, and two people treated on the same day can describe it differently.

Commonly reported, not guaranteed
Stage Commonly reported Also reported
Anaesthetic drops A brief sting, then nothing No sensation at all
Laser phase Firm pressure, suction, awareness of light A strong urge to look away; mild discomfort
Lenticule removal A sensation of movement, no pain Pressure, or nothing noticeable
Immediately after Blurred, watery, gritty A surprisingly clear improvement within minutes
First evening Glare and halos around lights; wanting to sleep Unequal vision between the two eyes
First week Fluctuating sharpness, dryness, screen fatigue Near vision that is briefly harder than expected

The lenticule, created and removed

Third-party video Published by Vision Eye Institute, a specialist eye care provider network. Footage of an actual SMILE pro procedure on the ZEISS VISUMAX 800 platform. The publisher is a provider of the procedure, so treat it as a demonstration of technique rather than independent evidence about outcomes. Watch on YouTube (opens in a new tab)

Questions to ask your surgeon

Print this and take it with you. Write the answers next to each question while they are fresh they are genuinely hard to recall accurately afterwards, and if you are seeing two clinics you will want to compare the answers rather than your impressions of the rooms.

Questions to ask your surgeon

Print this page and take it with you. Write the answers in the space next to each question while they are fresh: they are difficult to recall accurately afterwards, and you may want to compare answers between two clinics.

Your measurements

Suitability

The surgeon

The procedure

Afterwards

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Important: These questions are designed to help you evaluate a provider. They are not a substitute for clinical advice, and the answers should be interpreted by a qualified ophthalmologist.

What happens after the treatment room

The rest of the process is recovery, and it is longer than most people expect, not because healing is slow, but because refraction keeps settling after vision has become functional. Understanding that distinction is the difference between a normal first week and an alarming one.

Continue to the recovery timeline

Subjects this guide covers

  • SMILE Pro

    The current generation of the SMILE platform, built around a faster laser and an automated centring step. The clinical idea is unchanged: a lenticule is removed through a small incision.

Frequently asked questions

How long does SMILE Pro take?

The laser portion of a SMILE treatment is short, and the total time you spend in the clinic (including preparation, anaesthetic drops and settling afterwards) is considerably longer than the treatment itself. We deliberately do not publish a single figure in minutes because it depends on your prescription, the platform and how the clinic runs its list.

If a clinic quotes you a precise total visit time, ask whether that includes waiting, the pre-treatment preparation and the post-treatment check. Those are the parts that most often extend a visit beyond what a patient expected.

Is SMILE Pro painful?

The eye is numbed with anaesthetic drops, so the treatment itself is usually experienced as pressure, a suction sensation, and awareness of light rather than pain. Many patients report a gritty or watery feeling for some hours afterwards. Individual experience varies, and you should say so immediately if you feel actual pain during the procedure.

Needle injections around the eye are not used for refractive laser surgery. If you are anxious about the sensation, ask the clinic to describe the sequence in advance: knowing that a pressure sensation is expected is often what makes it tolerable.

Can both eyes be treated on the same day?

Often yes, and this is common practice. Some surgeons prefer to treat the two eyes at separate visits. The decision is a clinical one that depends on your prescription, your measurements, the condition of each eye and the surgeon’s judgement.

What happens if I move my eye during the procedure?

The platform tracks the eye, and the surgeon monitors the treatment continuously. If the eye moves beyond what the system can compensate for, the treatment can be paused or, in some cases, stopped and rescheduled. Ask your surgeon what the plan is if that happens to you: a good answer will be specific rather than reassuring.

Do I need to stop wearing contact lenses before surgery?

Usually yes. Soft and rigid contact lenses can temporarily change the shape of the cornea, which distorts the measurements used to plan surgery. Clinics will specify how long to leave lenses out before your assessment, and the required period differs depending on the lens type.

Is SMILE Pro reversible?

No. Removing corneal tissue is permanent. Some residual prescription after surgery can be treated with a further procedure in carefully selected cases, but the original tissue cannot be put back.

Because refractive surgery is irreversible, the preoperative assessment is the single most important part of the process. A clinician declining to operate is a positive sign, not a wasted appointment.

See all frequently asked questions Browse the vision knowledge base

Sources & further reading

We prefer primary sources. Where a claim comes from a manufacturer, a single study or a regulator, it is labelled as such below.

  • Small Incision Lenticule Extraction (SMILE) Clinical reference StatPearls, NCBI Bookshelf

    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

  • ZEISS VISUMAX 800 Manufacturer documentation ZEISS Medical Technology

    The manufacturer’s own product page for the femtosecond laser platform used for SMILE pro.

    Used for What describes the technology behind SMILE pro; The distinction between SMILE and SMILE pro; Claimed workflow features such as automated centration.

    Link checked 22 September 2026

  • Comparison of clinical outcomes following small incision lenticule extraction with the VISUMAX 800 and VISUMAX 500 Peer-reviewed literature Peer-reviewed literature (via PubMed Central) · 2025

    A single comparative study of SMILE performed on the newer and older generations of the ZEISS platform. A single study, not a pooled analysis.

    Used for The SMILE vs SMILE pro section, explicitly labelled as single-study evidence.

    Link checked 22 September 2026

  • Dubai Health Authority: Sheryan licensing and Dubai Medical Registry Regulator Dubai Health Authority

    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