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English definition of “eyestrain”

eyestrain

noun [U]     /ˈaɪ.streɪn/
tired or painful eyes as a result of too much reading, looking at a computer screen, etc.Eyesight, glasses and lensesUsing the eyesThe eye and surrounding areaOptics, microscopy and lasers
(Definition of eyestrain noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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