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Snellen Chart

Snellen eye chart

Adapted from the National Eye Institute, U.S. National Institutes of Health. Available online: http://www.nei.nih.gov

A Snellen chart is used to test far vision. It has several rows of letters. The letters on the top line are the largest; those on the bottom line are the smallest. You stand 20 ft (6 m) from the chart, cover one eye, and read the smallest row of letters you can see on the chart.

Current as of: December 18, 2019

Author: Healthwise Staff
Medical Review: Kathleen Romito, MD - Family Medicine
Adam Husney, MD - Family Medicine

This information does not replace the advice of a doctor. Healthwise, Incorporated disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to the Terms of Use. Healthwise is a URAC accredited health web site content provider. Privacy Policy. How this information was developed to help you make better health decisions.

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