Strabismus surgery usually takes 1-2 hours, the surgery time is mainly based on the type of anesthesia, the amount of surgery, and the number of muscles operated on. If it is simply do table anesthesia, anesthesia may need 5-6 minutes, the amount of surgery 1 muscle may need about 10 minutes, if it is 2 muscles may need about 20 minutes, relatively speaking, usually 2 eyes at most 4 muscles, not more than 6 muscles. If the amount of simultaneous surgery of muscles is too much in 1 eye, it may cause ischemic symptoms in the anterior segment of the eye, so it is forbidden to do more than 3 muscles on 1 eye at the same time. In addition, strabismus surgery is divided into local anesthesia and general anesthesia, general anesthesia for children who can not tolerate local anesthesia, general anesthesia time of about half an hour, the awakening time also needs about half an hour, general anesthesia surgery time may take 3-4 hours, that is, from going into the operating room to come out of the operating room.