Myopia, the name of a Chinese medical condition. Myopia is a condition in which parallel light rays are refracted by the refractive system of the eye and fall in front of the retina in a state of relaxed adjustment. The disease was recognized in ancient medical texts, and was called myopia, also known as near vision and far vision. Myopia is also called myopia when the degree of myopia is higher than that of congenital generation. The occurrence of myopia is related to genetics, development, environment and many other factors, but the exact pathogenesis is still under study. The most traditional method of correction is frame glasses. 2, there are also a variety of contact lenses (contact lenses). There are hard lenses and soft lenses. Hard lenses are divided into daily wear (RGP) and night wear (keratoplasty, also known as OK lenses). 3, myopia laser. There are various types of laser surgery, including laser with knife and laser without knife, and laser without knife with semi-femtosecond or full femtosecond. It can also be divided into flap and flapless surgery. 4.ICL implantation, i.e., implantation of a special IOL in the crystalline eye. It is especially suitable for highly myopic eyes. 5.Lens replacement. This is to remove the diseased lens and implant a calculated IOL. It is especially suitable for patients with crystalline lens disease. 6.Mixed method. A combination of more than two methods of correction. For example, the combination of “ICL+LASEK” for ultra-high myopia treatment will achieve unexpected results.