Optical treatment includes frame glasses and corneal contact lenses (contact lenses). Frame glasses are the oldest yet safe and effective method of correcting myopia and are currently the most widely used around the world. This method is best used for adolescent students. Although corneal contact lenses have their own advantages, they are cumbersome to clean and care for, so they are not the best choice for adolescent myopic students who have a heavy academic load and are less able to live on their own. Some special professions such as actors and athletes can wear them for a short time. The corneal structure is like the lens of a camera, its refractive index is +43D, accounting for 2/3 of the total refractive index of the eye, so changing the curvature of the cornea is the main choice for the treatment of refractive error, and the surgical methods that have been carried out for the treatment of refractive error are mainly to artificially change the curvature of the cornea for the purpose of treating refractive error. Our refractive surgery methods include lamellar keratoplasty (ALK), manual lamellar keratectomy (MLK), laser thermokeratoplasty (LTK), radial keratotomy (RK), excimer laser refractive keratomileusis (PRK), excimer laser in situ keratomileusis (LASIK), etc. Surgery for myopia is currently the only effective way to correct myopia (remove glasses). In terms of current medical developments, excimer laser in situ keratomileusis (LASIK) is the safest and most effective. However, this procedure is generally only suitable for myopic patients who are over 18 years old and have been stable for the past two years, and the thickness of the cornea should not be too thin. Corneal shaping lens treatment Simply put, corneal shaping lens is a special semi-rigid corneal contact lens that improves vision by reshaping the cornea. However, this method is only a disguised change in the wearing time of the lens, not a treatment for myopia, and is currently only a clinical trial at the experimental stage, with many complications, and must be carried out under the guidance of an experienced doctor. Fourth, drug treatment From the current medical development, there is no drug that can definitively treat true myopia or stop the development of myopia. For pseudomyopia, some ciliary muscle relaxants can be used to relax the spastic ciliary muscle and thus promote the recovery of vision. It should be noted, however, that pseudomyopia is not true myopia, and normal vision can be restored with proper eye use and rest.