What is acuity define?

Acuity is a term used to describe the sharpness or clarity of vision. It refers to a person’s ability to see objects clearly and in detail at a particular distance. Acuity is measured by optometrists and ophthalmologists using standardized eye charts with letters or symbols of varying sizes. The most common measure of visual acuity is 20/20, which means that a person can see a letter on an eye chart from 20 feet away that a person with ‘normal’ vision can also see from that same distance. A person with poor acuity may experience blurred or fuzzy vision, difficulty reading, and problems with depth perception. Factors that can affect acuity include age, genetics, eye diseases, and previous eye injuries. Regular eye exams are important for maintaining good acuity and identifying any visual problems early on.