hemeralopia

Definitions

  • WordNet 3.6
    • n hemeralopia inability to see clearly in bright light
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Webster's Revised Unabridged Dictionary
    • n Hemeralopia (Med) A disease of the eyes, in consequence of which a person can see clearly or without pain only by daylight or a strong artificial light; day sight.☞ Some writers (as Quain) use the word in the opposite sense, i. e., day blindness. See Nyctalopia.
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Century Dictionary and Cyclopedia
    • n hemeralopia In pathology, a defect of sight in consequence of which distinct vision is possible only in artificial or dim light; day-blindness. The term is also used, however, to express exactly the opposite defect of vision. See nyctalopia.
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Chambers's Twentieth Century Dictionary
    • n Hemeralopia hem′e-ra-lō′pi-a day-blindness, a defect of vision except in artificial or dim light; also applied to night-blindness.
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Etymology

Webster's Revised Unabridged Dictionary
NL., fr. Gr. , the opposite of ; day + of . See Nyctalopia
Chambers's Twentieth Century Dictionary
Gr. hēmera, a day, alaos, blind, ōps, the eye.

Usage

In literature:

The disease in all began in childhood, and hemeralopia was absent in but one case.
"Degeneracy" by Eugene S. Talbot
Within a few days after our departure from Galle, several severe cases occurred of hemeralopia, chiefly among members of the ship's band.
"Narrative of the Circumnavigation of the Globe by the Austrian Frigate Novara, Volume I" by Karl Ritter von Scherzer
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