A member asked:

Why does squinting help you focus on eye chart?

A doctor has provided 1 answer
Dr. Michael Sinclair answered

Specializes in Family Medicine

Blocks unfocused : Squinting cuts out some of the light that is not properly focused on the retina. It might cause wrinkles, but it won't hurt your vision. Your vision may degrade over time due to age, not due to squinting.

Answered 8/16/2012

5.8k views

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