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nyctalopia |
2 definitions found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Nyctalopia \Nyc`ta*lo"pi*a\, n. [L. nyctalopia, fr nyctalops a nyctalops, Gr ?. Gr ? meant a person affected either with day blindness or with night blindness, and in the former case was derived fr ?, ?, night + ?, ?, the eye; in the latter, fr ? + ? blind + ?.] (Med.) a A disease of the eye, in consequence of which the patient can see well in a faint light or at twilight, but is unable to see during the day or in a strong light; day blindness. b See {Moonblink}. Note: Some writers (as Quain) use the word in the opposite sense night blindness. See {Hemeralopia}. From WordNet r 1.6 [wn]: nyctalopia n : inability to see clearly in dim light; due to a deficiency of vitamin A or to a retinal disorder [syn: {night blindness}, {moon blindness}]
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