Amblyopia refers to a decrease in the best-corrected visual acuity of one or both eyes caused by abnormal visual experience during the visual development period. However, there are no obvious organic lesions in the eyes upon examination.
The causes of amblyopia usually include the following aspects.1. First, strabismus in one eye.2. Second, anisometropia, which means there is a significant difference in the refractive power between the two eyes.3. Third, refractive error.4. Fourth, form deprivation.

