imperfect vision in the dark or in dim light: a symptom of vitamin A deficiency
night blindness in American English
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
Derived forms
nightblind
adjective
Word origin
[1745–55]This word is first recorded in the period 1745–55. Other words that entered Englishat around the same time include: coda, ellipse, nickel, recapture, symmetrical
Examples of 'night blindness' in a sentence
night blindness
He learnt he had a disease marked by night blindness and tunnel vision that would eventually make him blind.
Times, Sunday Times (2007)
He also investigated the mutations in rhodopsin that are associated with retinitis pigmentosa, the cause of night blindness.