What Is 20/20 or 6/6 Normal Vision? [VIDEO]
What does it mean to have “normal” vision? Why are two different sets of numbers used to describe it? Mr. Carp explains, “The main concern of having 6/6 vision or 20/20 vision really comes from whether you are based in the United Kingdom or you are based in America. It is really just to do with feet and metres. 6/6 means you see at 6 metres what an average person can see at 6 metres and 20/20 is equivalent in feet, 20 feet versus 20 feet.” Read more about the way visual acuity is measured and what it means for laser eye surgery….

