Squint is a disease of the extraocular muscles in which both eyes cannot look at the target at the same time, and can be divided into two categories: common strabismus and paralytic strabismus. Common strabismus is characterized by no eye movement disorder and equal strabismus in the first and second eye positions; paralytic strabismus is characterized by limited eye movement and diplopia, which can be congenital or caused by trauma or systemic diseases. 1.Non-surgical treatment Treatment of strabismus is firstly for amblyopia to promote good visual development of both eyes, and secondly for correction of the skewed eye position. The treatment methods for strabismus include: wearing glasses, wearing eye shields, and orthoptic training. Eye shields are the main treatment for amblyopia caused by strabismus. Eye muscle surgery involves relaxing (weakening) or shortening (strengthening) one or more of the extraocular muscles in one or both eyes. Mild strabismus can be corrected with prismatic lenses. Orthoptic training can be used as a supplement before and after surgery. 2.Surgical treatment The younger the age of strabismus treatment, the better the treatment effect. Strabismus surgery is not only to correct eye position and improve appearance, but more importantly, to establish binocular vision function. The best time for surgery is before 6 to 7 years old. After surgery, binocular vision training is used to enhance and maintain stable stereo vision.