Who will get cataract in Qinghai?

The doctor of Qinghai Aier Eye Hospital said that senile cataract alone is the "product" of the aging of the eye lens. However, cataract is not a "patent" for the elderly. In the outpatient clinic, some people in their forties and fifties or even younger have blurred vision and can't see clearly, but they are not "presbyopia". After examination, the doctor found that their lenses had changed in color, density and shape-they had "cataract".