Corneal shaping lenses can quickly reduce myopia in a short period of time and have a certain effect on inhibiting the development of myopia, and are safer and more reliable than surgical treatment. The main principle of keratomileusis is that patients wear a specially designed rigid gas permeable contact lens with a flat middle and steep periphery, the lens exerts a slight pressure on the cornea, thus slowly changing the shape of the cornea and flattening the central optical zone of the cornea, thus reducing myopia and astigmatism. In the absence of effective methods to prevent myopia and control the development of myopia in young people, this technology does offer hope to both doctors and patients. This technology has been researched since the 1950s, and was used in a small number of clinical applications in the 1970s due to the limitations of materials at that time. Since the 1990s, the popular use of high-permeability materials and computer numerical control turning technology has led to a fundamental change in the design principle of the OK lens, which has been developed to rapidly reduce myopia and has been widely used in clinical applications. The latest OK lens is a special reverse geometry contact lens designed to improve visual acuity by changing the curvature of the cornea to correct refractive errors. The scientific and standardized application of OK lenses can reduce some of the myopia and control the development of myopia to a deeper level, and the method is safe and effective. Many brands of lenses have been approved for export by the U.S. Federal Food and Drug Administration and for import by the China Drug Administration. The use of keratoplasty lenses has been promoted in China since 1998, and clinical observations over the years show that it is basically safe to use keratoplasty lenses to correct myopia under the participation and supervision of a professional optometrist; the efficacy of controlling the development of myopia is definite, but it cannot cure myopia. Keratomileusis is a reversible process, so it does not cause irreversible deformation of the cornea. Regular review, standardized operating procedures and complete inspection equipment will be the safety guarantee for the whole treatment process to be carried out smoothly. As the number of patients undergoing this treatment is gradually increasing, some problems have emerged accordingly. In response to this situation, we emphasize that keratoplasty is a medical technology, to strictly grasp the indications: 1, to choose the State Drug Administration registered and certified brand, so that its quality can be guaranteed 2, fitting personnel must be ophthalmologists, and should pass the basic training in optometry, with a certain degree of theoretical knowledge and practical skills in the fitting of gas permeable hard contact lenses, while having a high degree of responsibility 3, to carry out this work of fitting institutions to ensure the safety of the process. 3, to carry out the work of the dispensing institution must be complete inspection equipment, detection means and procedures should be strictly standardized 4, the doctor should be objective and true to the dispenser to introduce the role of OK lenses 5, require patients to have good compliance, follow medical advice to wear lenses, medication, strict care, to regularly review. In summary, keratomileusis is a long-term myopia correction treatment process, its wearing time is long, so patients should build confidence and adhere to regular follow-up, problems found should be dealt with in a timely manner to ensure that OK lens correction treatment is both safe and effective.