It is generally accepted that the less severe the amblyopia and the earlier the treatment is started, the better the outcome. For amblyopia patients over the age of 12, treatment is not very effective. There are many causes of amblyopia, and the more common ones are usually refractive amblyopia, refractive error amblyopia, strabismus amblyopia, and form deprivation amblyopia. Therefore, to treat amblyopia, vision is usually improved by one or more of the following methods: first, by identifying the cause of visual deprivation; second, by correcting visually significant refractive errors; and third, by intervening in the contralateral eye to facilitate training and treatment of the amblyopic eye. The goal of the treatment is to try to make both eyes essentially equal in terms of visual acuity. Clinically, the more common form of amblyopia is still central gaze amblyopia, which is usually considered to be corrected by medical dilated optometry to accurately correct the refractive error, usually with spectacles. In addition, traditional masking methods are used, including traditional conventional masking, which covers the dominant eye and forces the amblyopic eye to gaze. Suppression therapy, also known as optical drug therapy, and visual stimulation therapy are also available. For amblyopia with eccentric gaze, there are options for conventional masking, red filter film, and posterior visualization, among others.