The danger of amblyopia is that the patient not only has low vision, but also does not have perfect binocular vision and precise stereo perception. Binocular vision (binocular monocular function or binocular vision): It refers to the process of a complete stereoscopic perception in which the object image of an external object falls on the corresponding retinal point eyes of both eyes, and the visual signals from both eyes are cheaply integrated and analyzed in the visual center. In our daily life, there are many professions that require good visual and stereoscopic vision. Stereo vision is a necessary function for the class to identify near and far, depth, a person without perfect stereo vision, even if the vision of each eye is normal, it is impossible to complete fine work well. State in the admission or recruitment, vision is often used as an important criterion, some professions such as surgeons, drivers, navigation, aviation, machinery manufacturing and other requirements for vision and stereo vision are very strict, if because of amblyopia and stereo vision problems and lost the right opportunity, it will be a lifelong regret.