Amblyopia is a condition in which the visual organs are disturbed by certain factors early in the development of the visual system, resulting in reduced vision in one or both eyes. Amblyopia is a relatively common eye disease in children, with a prevalence of about 2-4%. What are the common causes of amblyopia? Common factors that interfere with visual development include strabismus, refractive errors, congenital cataracts, ptosis and other eye diseases. The pathogenesis of amblyopia is that the factors that interfere with visual development result in insufficient light stimulation into the eye, so that the visual cells cannot be effectively stimulated, thus depriving the macula of the opportunity to form clear images (form deprivation) and competition between clear and ambiguous images with unequal input from both eyes (competition inhibition), resulting in monocular or binocular vision loss. What are the risks of amblyopia? Children with amblyopia have poor visual acuity and no significant improvement in visual acuity correction with glasses. Ocular examination of the refractive media in the eye is clear, the fundus is normal, and there are no obvious neurological or other factors to explain this visual deficit. Children with amblyopia, if not detected and treated early, will not only suffer from low vision in one or both eyes, but will also lose binocular monocularity and stereopsis. Children with amblyopia will suffer from learning and will not be able to see the blackboard in class, especially with multimedia courseware. A variety of occupations are limited, such as architecture, medicine, engineering design, artwork, athletes, modern machinery operation and other fine work.