Myopia is corrected by implanting a lens, a surgical procedure also called intraocular refractive surgery, which currently consists of two main types: the first, IOL implantation for crystalline eyes; and the second, lens replacement surgery. Both methods can be used for the correction of high myopia. The cost of the surgery costs about $20,000-30,000, mainly because the implanted IOLs are more expensive. These two surgical methods are suitable for different people. IOL implantation for crystalline eyes is mainly suitable for high myopia where the refractive medium is more transparent, such as high myopia in young people, and the principle of the surgery is to reimplant an IOL on the surface of the lens to correct myopia in this way; while lens replacement is mainly suitable for high myopia in elderly people, which is usually combined with cataract. Therefore, myopia can be corrected by replacing the IOL.