The Snellen Eye Chart

The Snellen Eye Chart is a tool used by eye care professionals to measure visual acuity, or how well you see at a distance. It consists of rows of letters that decrease in size from top to bottom. During an eye exam, you stand at a specified distance and read the smallest line of letters you can see clearly. Your ability to read these lines helps determine if your vision is normal or if corrective lenses are needed. The chart provides a standardized way to assess and compare visual clarity across individuals.