Medically reviewed by Johnstone M. Kim, MD The term "20/20 vision" refers to how sharp your eyes are when you look at a standard eye chart (Snellen chart) from a distance of 20 feet (or 6 meters ...

They started by having a group of volunteers with 20/20 vision view a standard Snellen eye chart, which was displayed on a video screen.

The standard eye chart only covers letters and numbers, but athletes need above average vision to track balls hurtling toward them at alarming speeds. To test those special skills, a University of ...

Seventy-nine percent of those in the two-hour group and 76% in the six-hour group could read at least two more lines in the standard eye chart than they could read before the treatment.

Typically, just 20% of patients will recover vision and it is extremely rare to recover vision greater than the worst score possible on a standard eye chart (20/200).

In essence, playing video game improves your bottom line on a standard eye chart.

The school's standard eye chart test had a false referral rate of only 10 percent to 11 percent, according to Webb. Dr. Stanley Hand, an ophthalmologist in Orlando, cited similar problems.