Adapted from the National Eye Institute, U.S. National Institutes
of Health. Available online: http://www.nei.nih.gov
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.
Primary Medical Reviewer
Kathleen Romito, MD - Family Medicine
Specialist Medical Reviewer
Christopher J. Rudnisky, MD, MPH, FRCSC - Ophthalmology
How this information was developed to help you make better health decisions.