Strabismus, a condition in which the eyes squint when looking at a person, is also called strabismus, is a relatively common ophthalmic condition that can occur in children, adolescents, and adults. The cause of strabismus is usually due to congenital malfunction of the extraocular muscles, or acquired trauma, abnormal function of the extraocular muscles, nerve paralysis and other causes of eye deviation. The management of this condition depends on the severity of the condition. If the strabismus is not very obvious, the degree is very small, and it does not affect the visual function, it does not need to be treated and can be followed up regularly. If the degree of strabismus is relatively large, affecting the development of visual function, or causing a greater impact on the appearance, it can be corrected by surgery, which is a relatively routine ophthalmologic procedure. In children, early surgery is recommended because prolonged strabismus can affect the development of stereoscopic vision in both eyes.