This condition is called vertical strabismus, and is a relatively common type of strabismus. The principle of surgery is to adjust the eye position by changing the starting and ending points of the extraocular muscles, which is also a routine operation in ophthalmology. In adults, the procedure can be performed under local anesthesia; in children, the procedure is usually performed under general anesthesia because they are too young to cooperate with local anesthesia. Regular follow-up is required after surgery to observe changes in eye position. If the eye position returns to normal, there is no problem; if the eye position is still abnormal, it may need to be corrected again.