Usually, it is suitable for the kids to wear eye patch for 3 to 4 hours per day for continuous 12 weeks. In general, the lazy eyes are also called amblyopia. It is a normal vision deficiency of an eye that fails to transmit or poorly transmitted through the optic nerve to the brain for a certain period. It is effective to improve eyes' ability to focus by wearing eye patch mandatory to treat amblyopia. At the same time, the relevant equipment can shrink the period of treating amblyopia. Additionally, the treatment can be obvious good when the kids are 3 to 6, and there is useless if the kid is above 12.