eye chart

An eye chart is a tool used by eye care professionals to measure how well you see from different distances. It typically displays rows of letters, numbers, or symbols that decrease in size from top to bottom. During an eye exam, you'll be asked to read the smallest line you can clearly see, which helps determine your visual acuity or clarity of vision. The results guide eye care providers in diagnosing vision problems and prescribing corrective lenses if needed. Eye charts are a simple, effective way to assess your visual sharpness and overall eye health.