Ophthalmology & Optometry/squint

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Question
Hi!
How is it that, when I squint my eyes (close the eyelids together until there remains only a slit and I can practically see my eyelashes) I see perfectly? (I have myopia at the right eye).

Answer
Hi Gheorghe,
You are making a 'stenopaic slit' with your eyelids and then can see more clearly.  Similar to a 'pinhole' effect, so read about a pinhole camera and how it works.  It avoids the problem of focus error at the expense of aperture size and therefore brightness.  the concept is as old as can be, they even sold 'laser glasses' that were pinhole glasses sold to cure myopia or relax eyes or something like that.  Just don't squint too much, you'll get wrinkles sooner!
Regards
Mitch Axelrod, OD

Ophthalmology & Optometry

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Mitchell Axelrod

Expertise

I'm happy to answer questions about eye exam findings and procedures, glasses and contact lens types/prescriptions/problems. I can also answer questions about general eye conditions/diseases. I do not answer questions concerning surgical techniques/procedures. Please state your age or within a small range when asking questions, as it is often important.

Experience

Optometrist 19 yrs.

Education/Credentials
Doctor of Optometry, cum laude; Residency in Ocular Disease

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