Snellen Test for Visual Acuity

What is the test?

Published: December, 2019

A Snellen test uses a chart with different sizes of letters or forms to evaluate your visual acuity-that is, the sharpness of your vision. The test shows how accurately you can see from a distance.

How do I prepare for the test?

No preparation is necessary.

What happens when the test is performed?

You stand or sit at a specific distance from the eye chart. Usually you are told to cover one eye with a cardboard piece or with your hand while you read letters with the other eye and say them out loud for the doctor.

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