a condition of the eyes in which vision is normal in daylight but abnormally poor at night or in a dim light; nyctalopia.
Origin of night blindness
First recorded in 1745–55
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Affected with nyctalopia.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.