Retinal detachment is a serious eye disease. I will recommend your several methods to prevent it: first, you should prevent eye injuries. You try to not lift heavy things, and avoid violent activities, in order to prevent foreign object damage your eyes. Second, you should not over use your eyes and make them fatigue. You should keep the rest of your eyes, do not stare at computer and television for a long time, you should also maintain a certain distance when you read book. After using one or two hours, you should make your eyes have a rest. Third, you should prevent myopia. The experts believe that people with high myopia are easy to have retinal detachment. Fourth, you should have a regular eye examination, especially the patients with myopia.