night blindness

American

noun

Ophthalmology.

a condition of the eyes in which vision is normal in daylight but abnormally poor at night or in a dim light; nyctalopia.

night blindness British

noun

pathol a nontechnical term for nyctalopia

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

nightblind

adjective

Etymology

Origin of night blindness

First recorded in 1745–55

Example Sentences

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See Examples For:

night blindness

The work could also improve scientists' understanding of diseases that damage the retina, including macular degeneration, glaucoma, and congenital night blindness.

From Science Daily ● Jul. 14, 2026

Ironically, the genetic alteration is surprisingly similar to one that degrades pigments in human retinas, causing night blindness.

From Science Magazine ● Mar. 23, 2023

He is afflicted by night blindness, a possible consequence of his own malnutrition early in life.

From Scientific American ● Sep. 22, 2021

I have nearly complete night blindness in one eye.

From Slate ● Jan. 9, 2020

Despite night blindness, the Pole Star would follow, sniffing at them with its radar arrays.

From "Ship Breaker" by Paolo Bacigalupi

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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023