Definition of Nyctalopia

1. Noun. Inability to see clearly in dim light; due to a deficiency of vitamin A or to a retinal disorder.


Definition of Nyctalopia

1. n. 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.

Definition of Nyctalopia

1. Noun. (medicine) The inability to see clearly in dim light; night blindness ¹

¹ Source: wiktionary.com

Definition of Nyctalopia

1. [n -S]

Medical Definition of Nyctalopia

1. Night blindness or difficulty in seeing at night. Symptom of vitamin A deficiency. (27 Sep 1997)

Lexicographical Neighbors of Nyctalopia

nyanzas
nyas
nyases
nyatiti
nybble
nybbles
nycer
nycest
nychthemera
nychthemeron
nychthemerons
nycpd
nyct-
nyctaginaceous
nyctalgia
nyctalopia (current term)
nyctalopiae
nyctalopias
nyctalopic
nyctalopy
nyctanopia
nyctemeral
nycterine
nycterohemeral
nycthemera
nycthemeral
nycthemeron
nycthemerons
nyctibune
nyctinastic

Literary usage of Nyctalopia

Below you will find example usage of this term as found in modern and/or classical literature:

1. The Medical Times and Gazette (1866)
"The fourth case was that of a girl, aged 10 years, healthy in appearance, but with deafness and nyctalopia lue her younger sister. ..."

2. The New American Cyclopaedia: A Popular Dictionary of General Knowledge by George Ripley, Charles Anderson Dana (1861)
"nyctalopia has been used in different acceptations by various authors, sometimes as signifying blindness occurring only at night, at others as occurring in ..."

3. Edinburgh Medical and Surgical Journal (1814)
"I" FIND it observed by different authors, that nyctalopia, or night- -*- blindness, ... nyctalopia, I believe, prevails in all tropical countries. ..."

4. The Half-yearly Abstract of the Medical Sciences: Being a Digest of British edited by William Harcourt Ranking, Charles Bland Radcliffe, William Dommett Stone (1867)
"nyctalopia, with Partial Deafness, in Five Children of the same Family. By THOMAS LAYCOCK, MD, Professor of the Practice of Medicine and Clinical Medicine ..."

5. A Treatise on the Diseases of the Eye by William Lawrence (1833)
"Day-blindness ; nyctalopia.— The opposite state to the former, or blindness during the day, is called nyctalopia. There are many states of the organ in ..."

6. Anomalies and curiosities of medicine by George Milbry Gould, Walter Lytle Pyle (1901)
"nyctalopia etymologically means night-blindness, but the general usage, making the term mean night-vision, is so strongly intrenched that it is u- and ..."

7. Edinburgh Medical Journal (1883)
"It must be admitted that the evidence is all in favour of nyctalopia originally being used to designate the state of night-blindness, and unless any strong ..."

8. The American Cyclopaedia: A Popular Dictionary of General Knowledge by Charles Anderson Dana (1875)
"... day blindness, has been applied to a defect of vision the opposite to nyctalopia. Beyond the photophobia common to those who have been long habituated ..."

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