Adult amblyopia is currently more difficult to treat because after the age of 14, the development of visual function is complete and treatment is limited. However, patients can also adhere to cover treatment to improve their vision. Amblyopia usually develops in childhood due to the failure of the patient’s visual function to develop properly. It is usually caused by diseases such as high hyperopia, refractive error, congenital cataracts, etc., resulting in the inability of the retina to receive effective and sufficient optical stimulation. Adults with amblyopia do not respond well to treatment, so amblyopia needs to be treated in a timely manner to avoid delays. Usually after the age of 12~14, the development of retinal function is completed. To treat amblyopia, it is necessary to stimulate the development of retinal function through masking vision and amblyopia training in time before the development of retinal function stops, thus promoting the improvement of visual acuity. However, adult amblyopia patients can also improve their visual acuity through masking therapy and amblyopia training, but the effect is limited. It is recommended that patients with amblyopia consult a doctor to evaluate their condition and follow the doctor’s instructions.