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.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

night′ blind`ness


n.
a condition in which vision is normal in daylight but abnormally poor in dim light.
[1745–55]
night′blind`, adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

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
-Ologies & -Isms. Copyright 2008 The Gale Group, Inc. All rights reserved.

nyctalopia

(night blindness) The inability to see well in dim light.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited
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
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Translations

nyc·ta·lo·pi·a

n. nictalopía, visión imperfecta bajo iluminación baja.
English-Spanish Medical Dictionary © Farlex 2012
References in periodicals archive ?
It was claimed Mr Ibbotson, 59, was colour-blind and may also have suffered from night-blindness, known as nyctalopia.
It has been reported Mr Ibbotson may also have had colour and night blindness, known as nyctalopia.
In accordance with latest survey, at present, the rate of nyctalopia, a disease caused by deficiency of vitamin A, is 0.04 percent in the country as it attained the target of Millennium Development Goals (MDGs) of reducing the rate of nyctalopia below one percent to prevent blindness caused by deficiency of nutrition.
The conditions vary, but those with IRDs may face many similar challenges, including night blindness (nyctalopia), declining vision, or blindness at birth.
(3) Most cases present classical symptoms of difficulties with adapting to darkness and night blindness (nyctalopia) in old age and loss of vision in early adolescence.
She described her mother as having "macular degeneration and retinitis pigmentosa" that began as central vision loss in her forties and progressed to nyctalopia and peripheral vision loss.
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. (20) Although CSR is predominantly seen in men, it can also occur in pregnant women especially in the third trimester.