When we say that someone has 20/20 visual acuity, we mean that he or she could read a letter standing 20 feet away that most people with healthy eyes should be able to read standing 20 feet away. It is a standard set in our industry to indicate “normal” vision. Some people could actually see better than 20/20 visual acuity, so it is not accurate to state that 20/20 visual acuity is “perfect” vision. Also, visual acuity is not the only aspect of a person’s overall vision. For instance, you also have to consider one’s color vision, depth perception, peripheral vision, and contrast sensitivity.