For avoiding visual denegation, I can give you some suggestions. First, you should ensure adequate sleep, because adequate sleep is an important factor for the elimination of fatigue and restore the ability to work; second, you should insist on doing eye exercises. Eye exercises have a certain effect on the protection of eyesight, prevention of myopia. You can do it several time every day; third, you should have rational diet structure. In order to avoid myopia, you should eat few candy and sugar foods. You can eat more fruits and vegetables which includes protein, phosphorus, and calcium. Fourth, you should pay attention to eye health.
