If you are a person focusing on health and like to try all kinds of new apps, then you might have tried some with the subjects of visual acuity or color blindness test. But the fact is they don't like look so professional and practical - most of which are just funny games (e.g.: Eyesight Examiner Side N and THE EYE TEST).

Probably a lot of people sit for a whole day in front of the computer, cannot leave computer because of work during the day, after back home, we immediately came to the front of computer again at night - for fun (game, music, movie or social). Everybody knows this is very bad for eyesight and vertebral column, but perhaps only EyeDefender can help us make some improvements - for our health.