After a child develops strabismus, he or she needs to be seen by a strabismus specialist in the hospital to determine the type of strabismus before surgery is needed. In the case of congenital internal strabismus in infancy, surgery is usually required between 18 and 24 months of age. If there is monocular amblyopia, treatment will be required until the vision in both eyes is balanced. In the case of common internal strabismus, it is mostly associated with regulatory factors. In the case of refractive regulating internal strabismus, refraction with glasses is usually considered and surgical correction is not required. In the case of non-regulating internal strabismus, it is considered that if the patient has amblyopia, the amblyopia should be treated first, and then surgery should be performed in time to correct the eye position after the vision of both eyes is balanced. For exotropia, whether it is intermittent exotropia or constant exotropia, medical optometry is required, and surgery is usually considered as the main treatment after wearing appropriate glasses according to the degree of strabismus. Early surgery is generally advocated and should not be delayed because of the need for assembly training. If a child is found to have a non-common strabismus, such as a congenital paralytic strabismus, surgery is recommended as soon as possible after a clear diagnosis is made. In the case of acquired paralytic strabismus, it is recommended to treat the cause and then consider surgery if the strabismus is still present six months after the condition has stabilized.