Patient: Hello Professor, I am a senior student in Beijing, myopia is more than 800 degrees, and I have been wearing glasses for more than 10 years, I am 21 years old, I want to have myopia correction surgery in January next year, I have heard many people around me mention you, I want to hear your advice, which type of surgery is more suitable? Doctor: In general, myopic laser surgery is suitable for adults whose myopia has stabilized. Before the surgery, you must go to the hospital for a comprehensive eye examination to rule out any conditions that prevent you from undergoing the surgery, such as corneal shape and thickness. If you normally wear contact lenses, you should stop wearing them and replace them with regular frames 2 weeks before coming to the hospital for the examination. As for the type of surgery, the decision will be made based on the examination results. My eyes are 900 degrees myopic and 100 degrees astigmatism, and you recommended me to have a corrective surgery with a longer recovery period. After I discussed with my family, my parents are more supportive of this surgery and I will make an appointment at the hospital in advance. I have a few more questions for you. You said it takes 1-2 weeks to recover from this surgery, but how much can it recover to? Can the rebound be effectively controlled or avoided through post-operative medication? According to your experience, how many years after surgery does rebound usually occur? Thank you, Professor! Doctor: Hello Wu! The procedure I recommend is LASEK or Epi-LASIK, both of which are superficial corneal procedures: compared to traditional LASIK, they are closer to the superficial corneal layer and have a relatively more stable corneal shape after surgery, which is especially suitable for people with relatively thin corneas. The length of recovery time for superficial surgery depends mainly on the healing and repair time of the corneal epithelium. Most of them gradually recover to the preoperative vision when wearing glasses in 1-2 weeks, and reach the best vision for optometric correction in about 1 month. There are also some individual differences in the specific length of recovery time. Those with higher myopia will have a relatively slow recovery of vision and an increased chance of postoperative rebound (generally 1~? years after surgery). Early rebound can be controlled by choosing reasonable eye medication according to different situations, but some of them need to wear glasses of medium or low prescription again when looking at long-distance work because they cannot adhere to the medication for a long time or have side effects after using the medication. The ratio of wearing glasses again is basically the same as the preoperative myopia: for example, the ratio is 10% for 1000 degrees before surgery and 5% for 500 degrees before surgery.