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English definition of “cataract”

cataract

noun [C] (DISEASE)    /ˈkæt.ə.rækt/ US  /ˈkæt̬-/
a disease in which an area of someone's eye becomes less clear so that they cannot see clearly, or the area affected in this wayEyesight, glasses and lensesUsing the eyesThe eye and surrounding areaOptics, microscopy and lasers
(Definition of cataract noun (DISEASE) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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