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 ?
We examined two patients who presented with night blindness since childhood.
In recent years, the America and European sources have moved in to replace Russian equipment but New tanks to do away with old ones' night blindness
Vitamin A deficiency is associated with night blindness and increased mortality among refugee children1.
In many developing countries, the prevalence of night blindness is high among pregnant women with vitamin A deficiency.
For Adam, issues with night blindness and peripheral vision began causing him problems in high school.
He said that iron deficiency (anaemia) and vitamin A deficiency remains widespread in the country whereas, the maternal anaemia stands at 49% and night blindness at 16 percent.
Researchers at the University of Pennsylvania School of Veterinary Medicine, working with Japanese scientists, have uncovered a form of congenital stationary night blindness (CSNB) in dogs.
DAKKA (CyHAN)- Bangladesh has offered vitamin A capsules to millions of children between six months and five years of age in an effort to prevent night blindness.
Vitamin A deficiency is a global issue and can result a number of health issues, including reversible night blindness, or nyctalopia.
Even some glaucoma medications have night blindness as a side effect.
2948 blind people have had their eye sight restored by surgeries 204630 people received free consultation and 61727 children were protected from night blindness.
Glare can produce night blindness in drivers and can be hazardous to people and animals.