Hello, Orthokeratology is a highly oxygenated resuscitation contact lens, which gently and painlessly reshapes the elastic cornea and flattens the central part of the cornea, thus changing the refractive state of myopia, improving hyperopia and restoring its clear goal. Its main advantages are: short-term vision can be improved, myopia diopter can be effectively reduced, and most people no longer wear glasses or contact lenses, which can inhibit the development of juvenile progressive myopia and meet the requirements of some special occupations such as athletes, divers, pilots, actors, policemen and soldiers. However, corneal plastic surgery also has certain conditions for the wearer: 1, 750 years old, healthy and free from eye diseases; 2, you can wear contact lenses; 3. The curvature is between 40d and 46d; 4. Myopia is less than 600 degrees and astigmatism is less than 100 degrees. Corneal plastic surgery is customized for individuals and takes 15 days to a month. If the child has cancelled the military examination, you can consider doing myopia laser surgery. Generally, your vision can be restored within 4-6 hours after operation, and you don't need to be hospitalized.