Many people come to the hospital and ask me, “Doctor, when can I have myopia surgery?” But I always answer, “First, you have to do the pre-operative examination and meet the conditions for surgery.” Therefore, not everyone can have myopia surgery, and this should be clear to everyone. The following groups of people are not suitable for myopia surgery: 1, age less than 18 years old (except for special circumstances). The body of children and adolescents is in the growth and development stage, the eye axis will also develop with the development of the body, resulting in rapid visual acuity deepening, the post-operative effect can not be maintained. Therefore, myopia surgery is not recommended under the age of 18. 2.The refractive error in the last 2 years is not suitable for myopia surgery. 3.The eye has active inflammatory lesions, such as corneal ulcers, acute keratoconjunctivitis, etc. 4.People who have mental illness and are taking medication. 5.Women who are pregnant and breastfeeding. 6, If there are some physical diseases, such as diabetes, scar body, etc., is not suitable for myopia surgery. Many people will be disappointed if they do not meet the conditions of surgery after examination, and they have to sigh: “Myopia surgery is so “cold” ah!” Myopia surgery is not something you can do if you want to: Myopia surgery requires a series of pre-operative examinations to qualify for surgery. The requirements are different for different types of surgery. The strict pre-operative examination includes refraction, corneal thickness, corneal pattern, intraocular pressure, fundus and a series of other items. The doctor will confirm whether the myopic patient is suitable for myopia surgery and which type of myopia surgery is suitable based on the examination results.