A common misconception is that 20/20 eyesight means you have perfect vision. Unfortunately, not only is that untrue, but it’s harmful to assume that looking at an eye chart from a distance of 20 feet for a few seconds is going to provide enough information on the functioning of one’s visual skills.
Seeing clearly is important, but far too much emphasis is placed on it. vision is more than seeing clearly! You can have 20/20 eyesight and still have serious functional vision problems. Vision is the ability to obtain meaning and understanding from what we see with our eyes.
Vision is a complex combination of learned skills including eye movement coordination, binocular fusion (eye teaming), accommodation (eye focus) and visual perception.