Myopia can also occur again after myopia surgery, which is also called refractive regression and usually occurs more than six months after surgery. There are two reasons for this condition: first, the unreasonable use of glucocorticoid medication after surgery, which causes the cornea to heal too well and causes the refractive power to change again, leading to myopia. Second, after the surgery, the eye habits are still not paid attention to, such as using the eyes at close range for too long or reading at too close a distance, which may cause myopia to occur again in the long term. In this case, it is recommended that if the degree of myopia is relatively large, glasses or corneal contact lenses can be considered, or refractive surgery can be considered again.