If one eye is seeing 20/200 or less, the other eye must be 20/40 or better to pass the eye test. People are considered as legally blind when their corrected vision in both eyes is 20/200 or less.

“The computer is like a digital eye chart, and the smart phone is a remote control, kind of like a video game. And there are audio instructions that walk you through it every step of the way. ...

How can I avoid or treat digital eye strain? Taking visual breaks throughout your work day is the most important thing you can do. Experts often suggest following the 20/20/20 rule, which says ...