Amblyopia is a condition in which the distance vision is less than or equal to 0.8 and cannot be corrected because of functional factors without organic pathology. There are various causes. The purpose of early treatment is to improve visual acuity and improve binocular vision. The visual development is sensitive within 10 years old and critical before three years old; the effect of amblyopia treatment is related to the age, the younger the age, the better the effect, and the amblyopia treatment is also closely related to the nature of the degree of amblyopia and the cooperation of the patient’s parents.