Strabismus in one eye, usually a non-common strabismus, is caused by two main causes: the first is a paralytic strabismus caused by neuromuscular paralysis. The second is a restrictive strabismus caused by mechanical restriction due to localized extraocular muscles or adhesions or inclusions in the surrounding tissues. It is recommended to go to the hospital as soon as possible to improve the examination of strabismus, including eye position examination and eye movement examination. After the examination, if the strabismus is particularly pronounced, early surgery is needed to correct it. This surgery is a routine operation in ophthalmology, and the principle of the surgery is to artificially change the starting and ending points of the extraocular muscles to improve the eye position. If monocular strabismus is present, it is recommended to treat it early, as it can affect the development of binocular stereo vision after a long period of time. In the case of children, it may also lead to amblyopia.