English-Chinese/Cataracts cause half of all cases of blindness
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Cataracts cause half of all cases of blindness and 33% of visual impairment worldwide.
白内障导致全世界所有失明病例的一半和33％的视力损害。
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Cataracts cause half of all cases of blindness and 33% of visual impairment worldwide.
白内障导致全世界所有失明病例的一半和33％的视力损害。