500 degrees of vision belongs to moderate myopia, myopia is the eyes in a relaxed state, parallel light into the eyes, the focus falls on the retina before, resulting in the retina can not present a clear image. At present, there are mainly these methods to restore eyesight: 1, self-regulation treatment: usually can develop good eye habits, avoid reading in a dark environment, avoid watching electronic products for a long time, long hours with the eyes, you can do eye exercises to relieve eye fatigue, to avoid the aggravation of nearsightedness; 2, with glasses: you can go to the regular medical institutions under the guidance of the doctor, choose the right degree of glasses, use the concave lens of the glasses to make things clearer, and the glasses can be used to make things clearer. The use of concave mirrors of eyeglasses to make things image clearly projected onto the retina is an auxiliary method to help see things in the distance, but not to restore eyesight. During the period of wearing glasses, you should have regular checkups, so that you can adjust the prescription of glasses according to the situation in time to avoid aggravating myopia; 3. Surgical treatment: at present, the surgical treatments include keratorefractive surgery, intraocular refractive surgery, scleral refractive surgery and IOL implantation, and the most commonly used one is the keratorefractive surgery, and the IOL implantation can be used if you are not physically suitable for the refractive surgery; 4. Medications: medicines for treating myopia include atropine and 4, drug treatment: drugs for myopia treatment include atropine and tropicamide, etc. However, the effect of these drugs on the treatment of myopia is very small, and long-term use of drugs will produce side effects affecting the health, so the use of drugs for myopia treatment is relatively small nowadays. Myopia often causes retinal atrophy and degeneration, retinal hemorrhage, retinal detachment, subretinal neovascularization and other diseases, and when complications occur, you should go to the hospital for treatment in time to avoid delaying your condition.