The 20/20/20 rule Every 20 minutes, look at least 20 feet away to unfocus your eyes, for at least 20 seconds. Also, if you already have prescription eyeglasse

The 20/20/20 rule Every 20 minutes, look at least 20 feet away to unfocus your eyes, for at least 20 seconds. Also, if you already have prescription eyeglasses, ask your optometrist about a weaker "computer work" Rx to get day work eyeglasses.