Definition of nyctalopia in English:


Syllabification: nyc·ta·lo·pi·a
Pronunciation: /ˌniktəˈlōpēə


  • The inability to see in dim light or at night. Also called night blindness.
    More example sentences
    • Fundus examination is usually normal, distinguishing it from the progressive conditions causing nyctalopia.
    • The insensitivity to dim stimuli is accompanied by a mild nyctalopia.
    • Ophthalmologists are occasionally confronted with an individual presenting with nyctalopia (ie, a relatively greater difficulty seeing at night).


late 17th century: via late Latin from Greek nuktalōps, from nux, nukt- 'night' + alaos 'blind' + ōps 'eye'.

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a small amount; a little