The greatest danger of amblyopia is that the child not only has low vision in both eyes or one eye, but also does not have perfect binocular vision and fine stereo vision. Amblyopia is more harmful than myopia because children with simple myopia can see far and blurred, and see close and clear, and the visual cells and nerves can be stimulated by external objects and do not decline; amblyopia is different, because the visual cells and nerves of the affected eye are not accurately stimulated by external objects for a long time and decline, and the distance vision is lower than 0.8. If not prevented in time, the vision of the affected eye will be permanently low and become monocular vision. In the long run, the burden on the healthy eye will be increased, and the vision of the healthy eye will gradually decline. Therefore, amblyopia will affect the life of the patient, learning and work. In their eyes, stereoscopic vision is blurred, so they cannot accurately judge the orientation, position and distance of objects. For amblyopic children, amblyopia, if not prevented and treated in time, will seriously affect their learning and even their future work and life.