1, what is amblyopia: amblyopia is not only found by the examination of the eye organism pathology, but also by refractive correction of visual acuity can not reach 0.9, according to the degree can be divided into mild, moderate and severe amblyopia; correction potential to mention less than 0.8 is called mild, less than 0.5 is called moderate, severe even only 0.1. Some are genetic aspects, some are refractive error (high myopia, farsightedness, astigmatism, refractive aberration, etc.), the earlier the detection of amblyopia, the earlier the intervention of the treatment effect. The earlier amblyopia is detected, the earlier the intervention, the better the treatment. 100% cure rate within 3 years old, more than 90% cure rate between 3-5 years old, more than 6 years old, the cure rate will plummet. 2, the danger of amblyopia: (1) amblyopia can cause and aggravate myopia. Poor vision in amblyopic eyes, watching TV often the more you look closer and closer to the TV, so that the lens becomes convex causing or aggravating myopia. (2) Amblyopia can cause poor academic performance, because it is difficult to read the words on the blackboard. (3) Amblyopia can cause “pediatric hyperactivity”: because of the inability to read blackboard words, attention often can not focus on the teacher’s lecture, and engage in small movements and other “hyperactivity”. (4) Amblyopia can cause stereo vision defects, so that children can not engage in many good jobs in the future. (5) Amblyopia can cause lifelong low vision or even blindness. 3, amblyopia prevention and treatment four points: early, with glasses, amblyopia instrument treatment, cover healthy eyes (1) early: early detection, early treatment is the key to prevention and treatment of amblyopia. According to the Ministry of Health, the earlier amblyopia is detected, the higher the cure rate, and the treatment is less effective after the age of 8 and rarely effective after the age of 12. Therefore, parents and doctors should work together to detect and eliminate amblyopia as early as possible before school. Methods for early detection of amblyopia: Basic refraction: The first dilated eye examination is done during the child’s kindergarten years. Experts at home and abroad generally urge that kindergarten children should have an accurate dilated eye exam to determine their basic refraction level, regardless of whether their vision is normal or not. Basic refraction is more meaningful to eye health than visual acuity: it can be used to diagnose amblyopia, myopia, hyperopia, astigmatism, and internal strabismus, etc. A basic refraction examination will benefit the child for life. Vision check: Any child whose visual acuity is below 0.6 at the age of 3~5 and 0.8 at the age of 6 or above should go to the hospital for refractive examination as early as possible to detect amblyopia. (2) Wearing glasses: Since most amblyopia is caused by astigmatism, farsightedness and myopia, wearing glasses is equivalent to aligning the eye’s focal length with the retina so that it gets a clear image, which is the basis for treating amblyopia, and it is difficult to cure amblyopia if the glasses are not worn. Wearing glasses requires standard lenses, good optical center, accurate pupil distance, no loosening of the frame and reasonable prescription. It is best to go to a dispensing center with expertise in eye care and excellent technology to get glasses. (3) Amblyopia treatment: Amblyopia can be seen as a kind of vision atrophy, or vision cells sleeping, often not enough to rely on glasses alone, need direct vision training, or special flashing light to wake up the “sleeping” vision cells in order to cure. Amblyopia devices are divided into two categories: ① direct vision enhancement: such as bead-piercing, hand-brain-eye coordination vision enhancement (homework), fine vision training, can directly improve vision. ② Indirect vision enhancement class: red flash, light brush, after image, etc. are indirectly increase vision by increasing the sensitivity of the visual cells or visual center, need to cooperate with the direct vision enhancement function to be effective. (4) Covering the healthy eye: When the difference in visual acuity between the two eyes is more than 2 rows, covering the eye with a visual acuity of 0.8 or more can lift its inhibition of the poor eye and allow the poor eye to get more visual exercise to obtain good results.