As each patient needs to go through strict examination and screening before excimer laser surgery, so in order to shorten the treatment time and reduce the cost burden for out-of-town patients, you can make the following preparations before coming to the hospital: 1. Stop wearing contact lenses in advance: soft contact lenses for at least 1 week, hard contact lenses for 3 weeks, and keratoplasty lenses for 4 months. 2.If you have conjunctivitis or keratitis, you must treat the inflammation first and the symptoms will subside for more than two weeks. 3.If you have active systemic lesions, please treat them first and come back for consultation after a period of stability. 4.Pregnant and lactating female patients are not allowed to have surgery. 5.Patients with myopia who come to the First Eye Hospital should read our introduction about the indications for surgery, and those who do not meet the conditions at all should defer coming. 6.After completing the above preparations, please make good arrangements for work and life, because the whole process from preoperative preparation, surgical treatment, postoperative observation, and then the patient can go home safely is about 1 week. Warm tip: Before having myopia surgery, you need to go through a strict and comprehensive preoperative examination, which can exclude contraindications to surgery and reduce the risk of surgery on the one hand, and choose a more suitable surgery method by understanding the eye conditions on the other hand. To be clear, it is not the expensive one that is good, but the one that suits you is the best.