Whether or not congenital amblyopia can be cured depends on the age of detection and the severity of the amblyopia, as well as the cause of the amblyopia. There are many causes of amblyopia, including strabismic amblyopia, refractive amblyopia, refractive error amblyopia, and form deprivation amblyopia. Because the best time to treat amblyopia is between the ages of 3 and 6, treatment beyond the age of 12 is basically ineffective. The younger the age, the more effective the treatment. In addition, mild to moderate amblyopia is treated well, central concave gaze is treated well, and peripheral gaze is treated poorly. It is generally believed that refractive amblyopia is cured well, while strabismic amblyopia and refractive amblyopia are treated better and may take time, with a cure rate of up to 75%. Amblyopia with morphological deprivation has a poor clinical outcome. The treatment of amblyopia begins with the removal of the form-deprivation factor, followed by the fitting of appropriate corrective glasses, usually with a good eye covering, as well as suppressive therapy and posterior image therapy. Therefore, the treatment of amblyopia emphasizes early detection and early treatment. Early screening is the key to preventing amblyopia.