Eye-covering therapy is very effective for amblyopia, but it is not done at night. The treatment involves a 3:1 or 4:1 regularity, starting with full coverage, after which it can be changed to partial coverage. Cover the eye on the healthy side and force the amblyopic eye to gaze. Use the amblyopic eye to do fine work such as tracing, threading beads, and playing the piano. It is generally recommended to use the 3:1 rule for 1-year-old children, i.e., cover the healthy eye for 3 days and the amblyopic eye for 1 day to encourage the healthy eye to gaze, so as to avoid masked amblyopia. 4:1 is used for 2-year-olds, and 6:1 or appropriately prolonged coverage is allowed for children aged 3-4 years and above. If there is a decrease in visual acuity in the healthy eye during treatment, cover the healthy eye for 1 to 2 days, and it will usually recover quickly; after recovery, continue to cover the healthy eye. After the visual acuity improves to 1.0, the full-day cover will be changed to partial cover, and the healthy eye will be opened for 2 hours daily. After 1 month, if the visual acuity does not decrease, the eye will be opened for 4 hours daily, and then gradually changed to 6 hours, 8 hours, until the eye is opened for the whole day. Amblyopia needs to be detected and treated early, so as not to miss the treatment time and cause permanent damage to stereopsis and other functions.