What is Visual Acuity?

By editor
February 2, 2010

Visual Acuity is a measure of how well a person sees. It is expressed as a fraction (e.g. 20/20) where the numerator is the testing distance and the denominator is the distance at which a person with normal eyesight can read the letters on the chart. For example, if the smallest letters that the person being tested can see are on the "20/40" line, it means a person with normal eyesight can see these same letters at a testing distance of 40 feet. For further information or to book a contact lens appointment with one of our doctors please call any of our three Rochester, NY Cornerstone Eye Associates locations in Gates (585-328-0153), Brighton (585-244-2200) or Irondequoit (585-266-7880).

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