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doc Definition of nyctalopia
    English to English
    noun
  • inability to see clearly in dim light; due to a deficiency of vitamin A or to a retinal disorder
  • source: WordNet 3.0
  • 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.
  • source: Webster 1913
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