The increasing prevalence of myopia and its progression to a younger age has made myopia a public concern. The current prevalence of myopia among adolescents in China is as high as 40%. Once myopia sets in, it is irreversible and gradually deepens. Many parents worry about their children’s myopia deepening year after year, sometimes resorting to various instruments, and sometimes running around for massage and medicine. However, over the years, the myopia of children still increases. So, is there any way to control the increase of myopia in children? The answer is yes, it’s keratomileusis. Orthokeratology, also known as OK lenses, began to be used in large numbers in western countries at the end of 1996 and was introduced to China in 1998. The principle is to use the new biomaterials in aerospace technology to make a highly transparent and orthokeratology contact lens with special design by computer, which can reshape the cornea gently, painlessly and without damage, so that the central part of the cornea tends to be flat, thus achieving the purpose of correcting myopia, improving natural vision and restoring the eyes to a clear state. The mitigating effect of keratoplasty on myopia was first seen in the 1960s, when optometrists observed that people who wore rigid contact lenses experienced a decrease in myopia after removal of the lenses. After decades of development. The keratoplasty lens can improve vision in a short period of time; it is effective in reducing myopic refraction, mostly eliminating the need for glasses or contact lenses; it is easy to operate and convenient to use; there are no risks and other eye functions are not affected; and more importantly, it has the effect of inhibiting the progression of progressive myopia in adolescents. The disadvantage is that the degree of myopia will return to the original state after stopping wearing them. 1.What are the suitable people for keratoconus? A: Adolescents with myopia less than 600 degrees and regular astigmatism less than 150 degrees who want to stabilize their myopia and not deepen it; those who are engaged in occupations with special requirements for vision (such as police, aviation, etc.) but suffer from myopia; myopic patients with high unequal vision; myopic patients who do not like to wear framed glasses; myopic patients who are not suitable or unwilling to undergo surgery (including laser surgery) but want to take off their glasses. 2.Who are not suitable for wearing keratoplasty lenses? A: People who are farsighted, suffering from acute conjunctivitis, corneal disorders, dacryocystitis, glaucoma, various fundus diseases, amblyopia, serious systemic diseases such as diabetes, rheumatism, unable to ensure standardized cleaning and treatment of lenses, and those who are unable to take care of themselves are not suitable for wearing keratoplasty lenses. Those who have been wearing contact lenses need to stop wearing them for 2-3 weeks before trying keratoplasty lenses; those who have undergone keratoconus surgery need to consult with an ophthalmologist. 3.How should I wear regular keratomileusis lenses? A: Corneal shaping lenses should be fitted by a registered optometrist or ophthalmologist. In the process of fitting, at least the optometry or comprehensive optometry, corneal curvature test, tear examination, slit lamp microscope test, eye pressure test, fundus examination and corneal topography examination should be carried out. 4.How should I use keratomileusis correctly? A: Within 3 months of first wearing keratoplasty lenses, you should go to the dispensing office for a regular and comprehensive review at least 5 times according to the prescribed time. After 3 months of wearing the lenses, regular review is still required. Maintain personal hygiene while wearing the lenses, and always wash your hands when handling the lenses. Make sure to put a lot of drops of eye lubricant on the inside of the lens before wearing the lens, and make sure that there are no air bubbles under the lens after wearing the lens.