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 keratoplasty lens, whose inner surface is composed of several arc segments. The lens is unevenly distributed with the tear layer, and the resulting hydrodynamic effect changes the geometry of the cornea, and when worn on the front of the cornea while sleeping, it gradually flattens the curvature of the cornea and shortens the eye axis, thus effectively stopping the development of myopia, and is known as “the technology that controls and corrects myopia while sleeping”. Of course, rigid gas permeable corneal contact lenses should not be worn during colds, fevers, eye inflammation and eye diseases such as glaucoma. Although it cannot fundamentally treat myopia and can also cause vision rebound after stopping wearing it, it does not change the structure of the cornea, which gives an opportunity to treat myopia in the future, and is an effective way to treat and stop myopia in adolescents.