The medical term for a squint caused by strabismus is ophthalmic squint. It arises as a compensatory change taken by the patient to maintain a level view of both eyes. Because it is not very clear that the crooked head and squint is caused by strabismus, some patients blindly perform neck surgery and suffer unnecessarily. Therefore, once a child is found to have crooked head and eyesight, he or she should routinely visit an ophthalmologist to rule out ocular strabismus. Generally speaking, if common strabismus in children is not treated in time, they may lose the visual function of both eyes after the age of 12, and even if the strabismus is solved by surgery after this age, it can only have a cosmetic effect. Therefore, strabismus should be treated promptly. The hazards of strabismus include: 1, cosmetic and psychological problems: strabismus affects aesthetics and can cast a shadow on children’s psychology, causing them to be withdrawn and perverse. Cangzhou Central Hospital Ophthalmology Department Wang Lianfeng 2, abnormal head position affects the development of bones: Due to extraocular muscle paralysis, in the direction of some visual fields, patients appear diplopia, in order to overcome double vision, patients use special head position such as crooked head, side face, raised chin to compensate, medically known as compensatory head position. For children, compensatory head position not only affects the aesthetics, but also leads to deformity of the whole body skeletal development. 3.Disrupt the formation of binocular monovision: When strabismic gaze, external objects fall in the macular central recess of the gaze eye and outside the central recess of the strabismic eye, respectively.