The outcome of amblyopia treatment is related to the age of first diagnosis, original visual acuity, refractive condition, type of gaze, and degree of strabismus. Generally speaking, the younger the age of first diagnosis of amblyopia, the less severe the degree, and the greater the possibility of cure. The best age for amblyopia treatment is 3-8 years old, and treatment is poor after 13 years old, with no hope of cure in adulthood. The prognosis of form deprivation amblyopia caused by congenital cataract is the worst, followed by amblyopia caused by refractive aberration, while refractive error and strabismic amblyopia have a better prognosis. The treatment principle is to eliminate inhibition, improve visual acuity, and correct eye position in order to restore visual function in both eyes. Masking therapy, in which the dominant eye is masked to force the amblyopic eye to use it, is the most common method of treating amblyopia. It is supplemented by other methods depending on the situation, such as wearing appropriate corrective glasses first if it is refractive parallax and refractive amblyopia; using 1% atropine to spot the dominant eye or using highly hyperopic lenses to blur the vision of the dominant eye in children with moderate or mild monocular amblyopia and poor compliance with masking therapy. In the case of patients with strabismic amblyopia due to non-modulating strabismus, surgery is performed to treat the strabismus. Therefore, the earlier amblyopia is detected and the more timely the treatment, the greater the possibility of cure and the better the prognosis.