Amblyopia: A non-organic disease in which the corrected visual acuity does not reach the normal visual acuity of the corresponding age, i.e., a disease of poor functional vision. 2, the formation mechanism: (1) internal strabismus: because the strabismic eye can not look at the external objects in front, the external light can not fully stimulate the fundus of the eye, the function of the fundus will not be properly developed and lead to amblyopia. (2) Refractive aberration: Because the difference in refractive error between the two eyes is large, the imaging in the two eyes is clear and blurred, resulting in the blurred image interfering with the clear image, and the brain has to inhibit the blurred eye in order to get a clear image, which leads to the formation of amblyopia due to the long-term inhibition of the poor eye in the cost state. (3) Higher refractive error, including moderate to high hyperopia, myopia and astigmatism, causes amblyopia to form by blurring the image on the fundus of the eye. (4) Formal deprivation amblyopia is caused by refractive media opacities such as congenital cataracts and ptosis, a common feature of these diseases is that they block light from entering the fundus and the fundus is not stimulated by light, resulting in amblyopia. In summary, amblyopia is caused by a blurred image of an object that is not focused on the fundus for some reason, and the fundus does not develop properly. This is the reason why the treatment of amblyopia must rely on wearing glasses to bring the focus to the fundus. In the process of visual development, due to strabismus, refractive error (high degree of farsightedness, myopia, astigmatism), congenital cataracts, etc., can not make the visual cells get sufficient stimulation of light, vision can not be normal development, and cause lower vision than their peers, for the parents of patients if they understand the pathogenesis of amblyopia, they can correctly choose the treatment method, and not blindly throw doctors, the child’s condition The parents of patients who understand the pathogenesis of amblyopia will be able to choose the correct treatment, instead of blindly and indiscriminately seeking medical help and delaying the child’s condition.