Cataract
All kinds of reasons such as aging, heredity, local nutritional disorders, immune and metabolic abnormalities, trauma, poisoning, radiation, etc. can cause lens metabolism disorders, leading to lens protein denaturation and turbidity, which is called cataract. At this time, the light is blocked by the turbid lens and cannot be projected on the retina, so objects cannot be seen clearly. From the perspective of collective blindness prevention and treatment, the World Health Organization classifies the lens denaturation and turbidity, becoming opaque, and affecting vision, and the corrected vision is 0.7 or below as cataract diagnosis.
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Site of disease:
Eye -
Infectious :
Not contagious -
Frequent population:
Children, elderly -
Related symptoms:
Visual impairment Pupil turns white Eyeball accommodation function decreases or disappears Vitreous body bulges through pupil to anterior chamber Increased intraocular pressure -
Concurrent disease:
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