If myopia reappears after surgery, patients often think that the surgery has regressed. In fact, if myopia reappears after surgery, there are generally two cases: one is the regression of the surgical effect: it often occurs within one year after surgery, and the amount of regression is related to the depth of the degree corrected. The higher the degree of correction, the greater the likelihood of postoperative regression. This is mainly related to postoperative tissue growth and subtle changes in corneal morphology. Another possibility is the result of myopia redevelopment. In some myopic patients, the preoperative refractive state is not very stable, and the development of the prescription is accelerated by some triggers, which may deepen the original prescription and form a new prescription. However, it is important to distinguish here that the degree of regression of the prescription does not correspond exactly to the regression of the visual acuity. Let’s take an example: a patient with ultra-high myopia, whose preoperative myopia was -12.00D and vision was 0.1, went through surgery and had -10.00D and -2.00D, and his vision reached 0.7 in the early postoperative period, but after a period of time, his vision regressed to 0.3. He said, “Doctor, how come my vision has gone back, it’s almost the same as before the surgery.” After the examination, it was found that his myopia was only -2.75D, which was very different from the pre-operative prescription, and the mirror he was wearing was much thinner. The degree of stability of the refractive state before surgery, and the reasonable use and protection of the eyes after surgery are the keys to maintaining a good vision state after surgery. If there is a regression, there is no need to be too nervous, especially for patients who have had LASIK surgery, within a certain period of time, it is easy to perform supplementary laser treatment again.