|Compare hemeralopia Nontechnical name: night blindness inability to see normally in dim light|
|[C17: via Late Latin from Greek nuktálōps, from nux night + alaos blind + ōps eye]|
|an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.|
|an extraordinary or unusual thing, person, or event; an exceptional example or instance.|
nyctalopia nyc·ta·lo·pi·a (nĭk'tə-lō'pē-ə)
A condition of the eyes in which vision is normal in daylight or other strong light but is abnormally weak or completely lost at night or in dim light and that results from vitamin A deficiency, disease, or hereditary factors. Also called night blindness.
failure of the eye to adapt promptly from light to darkness that is characterized by a reduced ability to see in dim light or at night. It occurs as a symptom of numerous congenital and inherited retinal diseases or as a result of vitamin A deficiency.
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