OK lenses, also known as keratoplasty lenses, allow the cornea to change shape so that a clear focus can be formed on the retina, allowing for clear imaging to control the growth of myopia. Corneal reshaping lenses can physically change the shape of the cornea, in which the central optical zone of the cornea is flattened, so that the retina can focus on the imaging focal point, thus enabling the patient to achieve a process of good vision without wearing glasses. The main principle of keratoplasty is to change the shape of the cornea so that the corneal area becomes spherical. Therefore, light coming in from any direction can form a clear focus after passing through the cornea, which in turn makes the image clear to control myopia. When patients want to wear OK lenses after myopia, they should be prescribed with lenses under the guidance of professional doctors to achieve good myopia control.