Many parents of children with strabismus are concerned about how long the surgery will take. Is it necessary to have general anesthesia? In fact, the length of strabismus surgery is closely related to the degree and type of strabismus. Generally speaking, for children with common strabismus, if one muscle is operated on at a time, the operation time is about ten minutes; if three muscles are operated on at the same time, the operation time will be longer accordingly; for children with paralytic strabismus, or children with non-common strabismus, the operation will be more complicated and the operation time will be longer if the muscles of the eyes are contracted or deformed. Children cannot cooperate with surgery under local anesthesia, so they need general anesthesia. Adults mostly choose local anesthesia, but with the development of general anesthesia level technology, general anesthesia drugs are becoming safer and safer, and the monitoring level is also improving, and now adults with strabismus also advocate surgery under general anesthesia, because the comfort of surgery under general anesthesia is still greatly improved.