night blindness

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night blindness

n.
A condition of the eyes in which vision is normal in daylight or other strong light but is abnormally weak or completely lost at night or in dim light. The condition may result from vitamin A deficiency, disease, or hereditary factors. Also called nyctalopia.

night blindness

n
(Pathology) pathol a nontechnical term for nyctalopia
ˈnightˌblind adj

night′ blind`ness


n.
a condition in which vision is normal in daylight but abnormally poor in dim light.
[1745–55]
night′blind`, adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.night blindness - inability to see clearly in dim light; due to a deficiency of vitamin A or to a retinal disorder
avitaminosis, hypovitaminosis - any of several diseases caused by deficiency of one or more vitamins
vision defect, visual defect, visual disorder, visual impairment - impairment of the sense of sight
References in periodicals archive ?
Recovery from impaired dark adaptation in nightblind pregnant Nepali women who receive small daily doses of vitamin A as amaranth leaves, carrots, goat fiver, vitamin A-fortified rice, or retinyl palmitate.