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单词 nyctalopia
释义

Definition of nyctalopia in English:

nyctalopia

noun ˌnɪktəˈləʊpɪəˌnɪktəˈloʊpiə
mass nounMedicine
  • A condition characterized by an abnormal inability to see in dim light or at night, typically caused by vitamin A deficiency.

    Example sentencesExamples
    • Fundus examination is usually normal, distinguishing it from the progressive conditions causing nyctalopia.
    • Ophthalmologists are occasionally confronted with an individual presenting with nyctalopia (ie, a relatively greater difficulty seeing at night).
    • The insensitivity to dim stimuli is accompanied by a mild nyctalopia.
    • About 90% of the female portion of the study suffer from Nyctalopia.
    • The fact that an abnormal result occurs in 26%, however, suggests that ncytalopia should be evaluated with electrophysiological testing even when the fundi appear normal.

Origin

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

Definition of nyctalopia in US English:

nyctalopia

nounˌniktəˈlōpēəˌnɪktəˈloʊpiə
Medicine
  • The inability to see in dim light or at night.

    〔医〕夜盲(症)

    Also called night blindness
    Example sentencesExamples
    • Ophthalmologists are occasionally confronted with an individual presenting with nyctalopia (ie, a relatively greater difficulty seeing at night).
    • The insensitivity to dim stimuli is accompanied by a mild nyctalopia.
    • Fundus examination is usually normal, distinguishing it from the progressive conditions causing nyctalopia.
    • The fact that an abnormal result occurs in 26%, however, suggests that ncytalopia should be evaluated with electrophysiological testing even when the fundi appear normal.
    • About 90% of the female portion of the study suffer from Nyctalopia.

Origin

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

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更新时间:2025/7/5 6:26:26