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A member asked:

Why does your vision improve when you squint?

A doctor has provided 1 answer
Dr. Tim Conrad answered

Specializes in Ophthalmology

Pinhole effect: The light rays that enter the eye through the exact center do not need to be bent (or refracted) to focus. By limiting the light entering the eye by a pinhole or squinting, you maximize this. Btw if squinting helps, you need glasses.

Answered 1/25/2013

5.3k views

Thank

Related Questions

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