Age-related cataract

Age-related cataract refers to the opacity of the lens that occurs in middle-aged and elderly people, and the prevalence increases significantly with age. Because it occurs mainly in the elderly, it was used to be called senile cataract. Its occurrence is related to many factors such as environment, nutrition, metabolism and genetics. All kinds of reasons such as aging, heredity, local nutritional disorders, immune and metabolic abnormalities, trauma, poisoning, radiation, etc. can cause lens metabolism disorders, resulting in lens protein degeneration and turbidity, which is called cataracts. The interference cannot be projected on the retina, so the object cannot be seen clearly. From the perspective of group blindness prevention and blindness control, the World Health Organization degenerates and opacifies the lens, becomes opaque, and even affects vision. Corrective vision is 0.7 or less before it falls into the scope of cataract diagnosis.

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