The prevalence of myopia in our youth is high, with a prevalence rate of 50 to 60 percent. A pair of myopia glasses adds a little weight to what should be a relaxed and happy childhood for children. The keratoplasty lens (OK lens) as a special contact lens can correct myopia into the line of sight. The keratoplasty lens originated in the United States and has been used in 34 countries around the world after 50 years of development; it is a special inverse geometric design of the keratoplasty lens, the inner surface of which consists of several arc segments. The lens is unevenly distributed with the tear layer, and the resulting hydrodynamic effect changes the geometry of the cornea, making the curvature of the cornea flatten and the axis of the eye shorten when worn on the front of the cornea during sleep, thus effectively stopping the development of myopia, which is known as “the technology that controls and corrects myopia while sleeping”. Let’s compare the main methods of correcting myopia, which are frame glasses, laser surgery and keratoplasty. Frame glasses are the most commonly used and can improve corrected vision, but frame glasses can bring some inconvenience to life and cannot control the development of myopia; laser surgery is for adults, and myopia must be stable for more than two years; keratoplasty has the advantage of improving naked eye vision and does not interfere with sports activities for young people. Another advantage is that it can control the progression of myopia. Once a teenager has myopia, it can increase by 75-150 degrees per year, and during the period of wearing keratoplasty, the growth of myopia can be effectively controlled. Experts point out that rigid gas permeable corneal contact lenses can stop or alleviate the progression of myopia. The mechanism is that rigid gas permeable corneal contact lenses provide a clearer retinal image quality, thus inhibiting the progression of myopia, or it may be that rigid gas permeable corneal contact lenses act on the cornea, changing its morphology and optical properties. Therefore, keratoplasty lenses are especially suitable for adolescent myopia patients under 18 years old, who are in the best period of myopia correction. The “Modern Keratoplasty” compiled by Professor Xie Peiying and Professor Chu Renyuan, the authoritative experts in optometry in China, affirmed the application of keratoplasty for adolescent myopia, and many foreign publications have also authoritatively recognized the application of keratoplasty for the correction of adolescent myopia. The creation of keratoplasty has brought new hope to adolescent myopia patients. Many children seen in children’s hospitals have successfully removed their myopia after wearing them. The safety of keratomileusis is a particular concern for parents. It is, after all, something that is placed on the surface of the eye, and the safety issue is not trivial. Therefore, parents must pay attention to three aspects when choosing keratoplasty lenses for their children: first, whether the product has a registration certificate from the State Drug Administration; second, whether there are perfect fitting conditions, including complete fitting equipment and the qualifications of the fitting personnel to ensure the professionalism of the fitting; third, whether there is a perfect after-sales service system. The fitting of keratomileusis requires the optometrist to carry out the fitting, and should have a wealth of keratomileusis fitting techniques and experience to ensure more accurate data and guarantee the corrective effect. Computerized optometry, comprehensive optometry, corneal curvature meter, corneal thickness gauge, tonometer, focal length meter, corneal topographer, slit lamp and other fitting facilities are also indispensable. The unique nature of keratomileusis requires that the optometrist regularly review the results and maintain the lenses for the user, so post-services and follow-up are very important and require a perfect after-sales service system and a rigorous review schedule. It should be said that in regular medical institutions, the safety of keratoplasty lenses is beyond doubt, as long as they are worn in strict accordance with the requirements and reviewed regularly under the guidance of a doctor. After all this talk about the advantages of keratoplasty lenses, is your child suitable for these amazing contact lenses? Don’t worry, the only way to determine the effectiveness and safety of keratoplasty lenses for your child is to have the relevant tests done first.