During the visual development, if the best corrected vision of one eye or both eyes (that is, wearing glasses) is lower than the corresponding age due to monocular strabismus, uncorrected anisometropia, high refractive error and form deprivation, there is no organic disease in eye examination. The newly revised diagnostic criteria for amblyopia in children are: the corrected vision of children under 3 years old is less than 0.5; 4-5 years old less than 0.6; 6-7 years old under 0.7; Above 7 years old, less than 0.8 or the difference between the best corrected visual acuity of both eyes is more than two lines.

Amblyopia belongs to abnormal function, and the operation has no effect. The best treatment period is 3-6 years old. If treated as early as possible, the prognosis is still good, but you are 50 years old and have missed the treatment period. There is no cure.