Corneal shaping lenses are specially designed hard contact lenses that have been described as “the technology that controls and corrects myopia while you sleep”. How do keratoplasty lenses correct myopia? By wearing keratoplasty lenses at night while sleeping, the curvature of the cornea is flattened so that external light entering the nearsighted eye is focused exactly on the central retinal hollow, keeping the image clear. Corneal shaping lenses allow clear vision to form in the central optical area of the cornea, avoiding blurred vision and visual fatigue and delaying myopia deepening. So, who is suitable for wearing keratomileusis? 1, age 8-40 years old, do not want to wear frame glasses myopic patients; 2, myopia deepening students; 3, wearing frame glasses cause discomfort or eye deformation of adolescents; 4, no organic eye disease (keratitis, severe dry eye, fundus disease, etc.); 5, college entrance examination, military or military examination and vision failure; 6, some special occupations: such as athletes, actors, etc. Relative contraindications to keratoplasty: 1, using drugs that may cause dry eye or affect vision; 2, corneal abnormalities, post-corneal surgery, history of corneal trauma, active keratitis and cone cornea; 3, other eye contraindications: any active acute inflammation of the eye, conjunctivitis, blepharitis, chronic lacrimal sacculitis, dry eye, incomplete eyelid closure, etc.; 4, unable to take care of themselves, poor personal hygiene, poor compliance, unable to repeat on time, etc, Those who cannot take care of themselves, have poor personal hygiene, poor compliance, and cannot be reviewed on time; 5. Those who are allergic to contact lens care products or lenses. Through the above introduction should probably understand, specific can wear, it is recommended to go to the hospital to do a strict examination, according to the results of the examination and the doctor’s recommendations for fitting.