Can dry eye affect vision?
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.
- Subject
- Eye conditions
- Topic
- Dry eye
- Kind of question
- Can I…
- Last reviewed
- 22 September 2026
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Where this answer sits
It is one of 483 answers in the vision and eye health knowledge base, filed under Eye conditions & diseases in Dry eye . The subject page carries the answers either side of it, and the hub is searchable.
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The pages that answer the subject behind the question, rather than the question itself.
- Condition Dry eye
This information is for educational purposes and does not replace an examination by a qualified eye-care professional.
General answers cannot tell you what is happening in your own eyes. Only an examination by a qualified ophthalmologist can do that.
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.
- Eye Health Information
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
- Refractive surgery and dry eye: an update
An update on how different refractive procedures affect the ocular surface, with attention to preoperative screening for dry eye.
Used for Why tear film assessment belongs in preoperative screening.
Link checked 22 September 2026