The doctor is right, such a degree is not suitable for strenuous exercise, because your eyes are actually very fragile. The eyeball axis of patients with high myopia is very long and the eyeball wall is very thin, so the retina becomes very fragile, and even the retina itself may be damaged. At this time, if there is external force, it is easy to get hurt. Therefore, people with high myopia had better not do strenuous exercise, mainly to prevent retinal detachment. The most terrible thing is that retinal detachment is usually painless, so we are generally not easy to detect. It can only be judged by some symptoms. The initial symptoms are decreased vision, dark shadows in front of eyes, frequent flashing and so on. Once these symptoms are found, whether they are high myopia patients or not, they are likely to be retinal detachment, so you should go to the hospital as soon as possible. If surgery is performed at the first time before the retina falls off to the macular area, the original vision level can be completely restored. If the treatment is delayed, it is inevitable to lose part of your vision. Playing basketball, jumping, playing football, running, diving, bungee jumping, disco dancing, badminton, boxing and other strenuous sports are not suitable for people with high myopia. Divers, football players, deep-water divers and boxers are all high-risk groups of retinal detachment. It is best for people with high myopia to check their fundus, vision and optometry regularly every six months. This is very important for patients with high myopia, because if they are not careful, retinopathy may occur.