I Safety issues Excimer laser treatment for myopia is one of the safest surgical procedures in the world today. This technology is available in the United States. Japan. It was approved by the Ministry of Health of China in 1993 and was first carried out in Beijing, Shanghai and other major hospitals for clinical trials, and then pushed to be carried out nationwide. Many famous athletes and actors (such as Deng Yaping and Zhao Wei) have chosen excimer surgery for their careers and beauty, and astronauts in China have also undergone excimer surgery. If there were safety risks, the Ministry of Health would not allow it to exist and develop. Aftereffects The excimer laser is a cold laser that is so precise that it can carve into hair. The surgery is performed within the scientifically set boundaries of corneal remodeling. There is no thermal effect when cutting corneal tissues, no damage to other tissues, and no lesions left in the eye, so there are no after-effects. III. The rebound problem The human cornea is like a convex lens, changing its refractive power will change the focus, so that the focus falls on the retina, and the myopia problem is solved. The reshaped cornea will not return to its original appearance, and the worn-thin lens will not become thicker, so the possibility of being myopic again is very small, and the normal use of the eye will not be myopic again. IV. The effect of excimer laser treatment for myopia is predictable, as long as your corrected vision can reach 1.0, the patient can achieve 1.0 or better with close cooperation with the surgeon, and it will remain the same for a long time. V. Doctor’s problem Excimer treatment is a very delicate surgery, the doctor has to operate on a 0.5 mm thick cornea, which requires a lot of experience and skills.