80% of human information is obtained from vision, how important is the health of vision! Leonardo da Vinci once said, “The eyes are the windows of the soul, through which people can embrace and appreciate the infinite beauty of the world, and the soul can dwell in the body”. In today’s information age, more than 80 of the external information is obtained by the visual channel, so we can see how important it is for us to have healthy vision! The complete visual activity consists of the following: external objects pass through the transparent refractive interstitium to form a clear image in the macula of both eyes; the neurosensory cells of the retina convert the image stimulus into nerve impulses and pass them along the visual nerve to the lateral geniculate body and the functional areas of the visual center (cerebral cortex); the functional areas of the visual center receive the nerve impulses The functional areas of the visual center receive the nerve impulses and complete a series of processing of complex visual information according to their respective division of labor and interconnection, decoding and translating the corresponding nerve impulses into complete visual images to produce visual cognition. Visual information contains different visual properties such as color, shape, size, depth, and movement; the conduction and processing of visual information is complex, and different areas of the cerebral cortex specifically process different visual properties; motion and stereoscopic depth project to area v5 (visual area 5), color information projects to area v4, and shape information reaches the IT motor area (subnipresent area cortex) through several mediating brain areas; since The conduction of color, shape, motion and stereoscopic depth perception starting from the retina is also done by different neural channels. Normal visual activity should meet the following three conditions: 1) clear imaging of the macula of the retina, 2) normal function of the visual conduction system, and 3) sound information processing capacity of the visual center. Some parents lack a correct understanding of amblyopia and often compare it to myopia in adolescents, which is incorrect. Although amblyopia in children and myopia in adolescents are both manifested as a decrease in distance vision, the causes of low vision are fundamentally different; myopia in adolescents completes good visual development during the sensitive period of visual development (before the age of 8), and the formation of visual nerve impulses and visual neurotransmission as well as the information processing ability of the visual center are sound; it is only because of the unhygienic use of eyes in life that myopia occurs, so that external objects The information transmitted to the visual center is not detailed and complete, thus affecting visual recognition and judgment and resulting in low vision. Only the first of the above three normal visual conditions is not available. After wearing suitable glasses, the retinal image becomes clear and all the visual function conditions are satisfied, so the normal visual discrimination ability is restored immediately. Therefore, most children with myopia only need a pair of suitable glasses to solve the problem. Amblyopia is the result of abnormal visual development environment (e.g., refractive error, refractive aberration, strabismus, ptosis or congenital cataract in one or both eyes) during the critical period of visual development, which makes the image of objects in the retina of both eyes unclear, resulting in insufficient information transmitted to the brain or asymmetric information transmitted to the brain by both eyes, affecting the visual center’s ability to process visual information. This affects the gradual improvement of the visual center’s ability to process information, resulting in a lower level of visual development than that of children of the same age. Refractive abnormalities in amblyopic children with corrective glasses can make retinal objects clear, but they cannot immediately improve the quality and transmission level of the optic nerve impulses, let alone the information processing ability of the visual center, and their functional defects cannot be repaired immediately. A series of amblyopia training is needed to repair the defective visual channels and improve the information processing ability of the visual center. Visual brain perception training is a series of visual function tests to identify certain deficiencies in the visual transmission channels and central information processing (e.g., visual information processing ability, visual contour and spatial relationship ability, visual discrimination, visual orientation and spatial localization ability, hand-eye coordination ability, visual local perception ability, visual memory ability, binocular coordination ability, visual focus, eye The training program is designed for different visual deficiencies to gradually repair the deficiencies in visual transmission channels and information processing, and eventually improve visual acuity and visual function so that amblyopia can be cured, generally 1-2 sessions for mild to moderate amblyopia, and 3-4 sessions for severe amblyopia. Since the examination and treatment of cerebral perception training requires a certain level of understanding, this treatment is generally suitable for children over 5-6 years old. Visual brain perception training combined with lens correction and appropriate masking is a good option for amblyopia treatment. The problems that can be solved by visual perception training are 1) improving the visual acuity of the amblyopic eye; 2) improving the binocular visual function of amblyopic children; 3) reconstructing the binocular visual function after strabismus surgery; 4) expanding the fusion reserve for better control of small strabismus; 5) relieving visual fatigue; 6) increasing the adjustment power and improving the adjustment reflex to improve reading ability and a series of other visual problems; 7) treatment of amblyopia in some adults.