There is no obvious organic lesion in the eye, but the corrected visual acuity of one or both eyes still cannot reach 1.0 is called amblyopia. Currently, the standard for amblyopia in China is corrected visual acuity ≤ 0.8 or the difference in visual acuity between the two eyes ≥ 2 lines. Amblyopia is an eye disease that seriously endangers the visual function of children, and if left untreated, it can cause aggravation of amblyopia and even blindness. The effectiveness of amblyopia treatment is determined by a combination of factors. The following is a list of the top 5 factors: 1. condition: 1. strabismus with eccentric gaze amblyopia, difficult to treat above 0.4; 2. post congenital cataract surgery: difficult to treat above 0.6. 3. 3.Eye tremor amblyopia: difficult to cure to 0.8 or above. 4. High myopia or high hyperopia amblyopia, such as over 7 years old, is difficult to be treated above 1.0. Age of initiation of treatment: For the above mentioned refractory amblyopia, the best results are achieved at the age of 1~2; at the age of 3~5, the results are acceptable; at the age of 6~7, the results are poor; after the age of 7, the results are even worse. Third, amblyopia instrument selection: mild to moderate amblyopia, 1 ~ 2 generations of amblyopia instrument can be, serious amblyopia or refractory amblyopia, more than 3 generations of high-precision compound amblyopia instrument with enhanced vision enhancement, myopia prevention and visual memory function is more effective. The higher the generation level, the better the fineness, mobility and multi-dimensionality of color scale, icon and stereoscope. The better the effect of vision enhancement. Children with ADHD have poorer results, those with insufficient patience during treatment have poorer results, those with intermittent treatment have poorer results, and those without parental supervision have poorer results. The effect of those who do not pay attention is poor. E. Optometry: 1. Poor results for those with inaccurate optometry; 2. Poor results for those with high farsightedness, low myopia and low astigmatism; 3. Poor results for those who often do not wear glasses or wear glasses for peeking; 4.