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:
August 31, 2020
Author: Healthwise Staff Medical Review: Kathleen Romito MD - Family Medicine Anne C. Poinier MD - Internal Medicine Adam Husney MD - Family Medicine Christopher J. Rudnisky MD, MPH, FRCSC - Ophthalmology
Medical Review:Kathleen Romito MD - Family Medicine & Anne C. Poinier MD - Internal Medicine & Adam Husney MD - Family Medicine & Christopher J. Rudnisky MD, MPH, FRCSC - Ophthalmology