1, affect the aesthetics, and may affect the psychological health due to the abnormal appearance, thus causing their isolation, low self-esteem; 2, cause amblyopia, strabismus patients are easy to form strabismic amblyopia, resulting in poor vision in the strabismic eye; 3, loss of stereoscopic vision, affecting career choice; 4, skeletal development deformities, some strabismus patients, due to eye muscle paralysis, often use the crooked head, side face and other special head position, if not corrected early strabismus, will lead to deformities of the whole body skeletal development, such as: scoliosis of the crest, facial development asymmetry, etc.