nyctalopia


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nyc·ta·lo·pi·a

 (nĭk′tə-lō′pē-ə)
[Late Latin nyctalōpia, from Greek nuktalōps, night-blind : nux, nukt-, night; see nekw-t- in Indo-European roots + alaos, blind + ōps, ōp-, eye; see okw- in Indo-European roots.]

nyc′ta·lo′pic (-lō′pĭk, -lŏp′ĭk) adj.

nyctalopia

(ˌnɪktəˈləʊpɪə)
n
(Pathology) inability to see normally in dim light. Nontechnical name: night blindness Compare hemeralopia
[C17: via Late Latin from Greek nuktálōps, from nux night + alaos blind + ōps eye]

night′ blind`ness


n.
a condition in which vision is normal in daylight but abnormally poor in dim light.
[1745–55]
night′blind`, adj.

nyctalopia

a condition of the eyes in which the sufferer can see clearly during the day or in bright light but has impaired vision at night or in poor light; night blindness.
See also: Eyes
night-blindness.
See also: Night
the loss of sight in darkness. — nyctalopic, adj.
See also: Blindness

nyctalopia

(night blindness) The inability to see well in dim light.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.nyctalopia - 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
Translations

nyc·ta·lo·pi·a

n. nictalopía, visión imperfecta bajo iluminación baja.
References in periodicals archive ?
Patients suffering with RP first experience nyctalopia which gradually progress to tunnel vision and ultimately masks with complete blindness.
However, even if the central visual acuity returns to normal, many of these patients still notice dyschromatopsia, loss of contrast sensitivity, metamorphopsia, or, in rare cases, nyctalopia.
The ocular involvement in mastocytosis has been described as solitary mastocytoma of the eyelid, allergic eye disease, painful orbital lesions, and nyctalopia caused by the malabsorption of vitamin A.
Oguchi disease is a very rare form of congenital stationary night blindness in which patients usually present with non progressive nyctalopia and Mizuo-Nakamura phenomenon.
Vision: tendencies towards myopia; wall-eye; nyctalopia.
During two years study, 31 cases of progressive retinal atrophy (PRA) were recorded in dogs with typical history of initial nyctalopia followed by hemeralopia.