Myopia is a common symptom of nearsightedness, as long as it is not accompanied by other diseases, that is, the surgery can be done. Most myopic patients see dark shadows in front of their eyes, floating around, it is generally recommended to dilate the pupils to look at the fundus, if there is no retinal detachment, no retinal lentigines or degeneration of the fundus, can be corrected myopia surgery. If there is a retinal detachment, or retinal degeneration, the patient will be given a fundus laser repair in advance. If there is a retinal detachment, the patient will be advised to have a retinal detachment surgery. After the laser repair, if the retina is better and there are no other accompanying symptoms, it is usually recommended to come back for a review in about half a month. If all is fine, refractive surgery can be performed.