Eye structure changes with different focus
This study looks at how the front part of the eye and the lens change shape when you focus on things at different distances. It may help people who have astigmatism and good vision to understand how their eyes work.
Summary written for real people, not researchers, by Clin2.
Who can take part
- You have astigmatism of -1.50 diopters or more (like needing glasses for blurry vision).
- Your best corrected vision (with glasses or contacts) is at least 20/25 (4.9 in decimal).
- You do not have any other health conditions affecting your whole body.
- You have never had eye surgery.
- You do not have an artificial lens or missing lens in your eye.
- You do not have crossed eyes (strabismus) or lazy eye (amblyopia).
- You are not pregnant or breastfeeding.
- You have no mental or nerve conditions that make it hard to cooperate with the eye exam.
Quick eligibility check
Answer a few plain-language questions, based on this study's own requirements, to get a preliminary sense of fit.
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