Researchers estimate that one-third to a half of Americans are nearsighted and that percentage has been growing over the last few decades. They feel that a big part of that increase has been from genetics, inherited from one or both parents. But researchers are only beginning to gain a better understanding of possible environmental causes, such as the affects of computer screens.
There are a few ways to improve eyesight in children and adults. These chiefly have to do with nutrition and exercise. And, of course, getting the proper amount of rest and relaxation is just as important to maintaining overall vision health.