Amblyopia: A person who has no obvious organic lesions in the eye and whose corrected visual acuity in 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 not treated in a timely manner can cause aggravation of amblyopia and even blindness. Etiology 1, strabismic amblyopia 2, refractive aberration amblyopia 3, optical malformation amblyopia 4, disuse amblyopia (form deprivation amblyopia) 5, congenital amblyopia or organic amblyopia Clinical manifestations 1, visual acuity and refractive abnormalities 2, reading difficulties or crowding phenomenon. 3, fixation abnormalities Treatment Remove inhibition, improve visual acuity, correct eye position, and train macular fixation and fusion function in order to restore visual function in both eyes. The treatment effect of amblyopia is related to the age and nature of fixation, which is better at 5-6 years old and worse after 8 years old; central fixation is better and paracentral fixation is worse.