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

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

night blindness

G90D is one of four mutations of rhodopsin associated with night blindness.

From Science Daily ● May 16, 2024

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

And why on earth does their definition of manliness mean you’re supposed to be able to will night blindness away?

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

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