γγ1, common causes of common strabismus, congenital factors, developmental disorders of the brain’s higher neurological reflexes and eye regulation fusion and other functional abnormalities; with a certain relationship with genetics, but most strabismus patients do not have a clear family history; and refraction is closely related, internal strabismus is often accompanied by hyperopia. Astigmatism. astigmatism.γγThe common causes of paralytic strabismus are congenital anomalies, diseases of the nucleus innervating the extraocular muscles and the extraocular muscles themselves; certain diseases may cause: intracranial tumors, cerebrovascular accidents, inflammation, trauma, diabetes, myasthenia gravis, vitamin B1 deficiency and inflammation of the orbit. Some patients with intracranial tumors only have symptoms in the eyes, but other symptoms are late, so they should seek medical attention as early as possible to avoid delaying the treatment of intracranial tumors.