Definition of night blindness in US English:

night blindness


  • less technical term for nyctalopia
    • ‘They are usually registered partially sighted by their thirties, suffering night blindness and losing their peripheral vision to become severely visually disabled.’
    • ‘We describe two patients with congenital stationary night blindness, a diagnosis which may be missed without appropriate history taking from the parents, particularly if there is no family history of visual problems.’
    • ‘Vitamin A is important for photoreceptor mechanisms in the retina and the integrity of epithelia, so deficiency can lead to night blindness.’
    • ‘Initially manifested as night blindness in young dogs, as PRA progresses, its victims become totally blind.’
    • ‘Progressive retinal atrophy is a disease in which the retina slowly deteriorates, producing night blindness in young dogs.’
    • ‘Lack of vitamin A causes night blindness, with hundreds of thousands of children, particularly in Southeast Asia, affected.’
    • ‘Approximately halfway to the summit, however, Dr Weathers realized he had night blindness.’
    • ‘For night flying, engineers added special flame-suppressing exhaust stacks to it to prevent night blindness in crew members.’
    • ‘Affected individuals are sensitive to blue light and develop night blindness at an early age.’
    • ‘These include exhaustion, weight loss, night blindness, dehydration, diarrhoea and hunger-related deaths.’
    • ‘Regular carrot intake can also help protect against macular degeneration and cataracts, help minimise night blindness and reduce harmful cholesterol.’
    • ‘The abundant vitamin A contained in these foods can prevent vision decline and eye diseases like coronal dryness, night blindness and xerophthalmia, another form of dryness in the eye.’
    • ‘Impaired fat soluble vitamin absorption may also occur leading to osteopenia, increased clotting times, and night blindness.’
    • ‘Five to 6% of women reported a history of night blindness, a clinical symptom of vitamin A deficiency.’
    • ‘If the liver blood is insufficient, there will be a dryness of the eyes, blurred vision, or night blindness.’
    • ‘He suffers from night blindness, but this hasn't stopped him winning three Paralympic titles and a host of other medals.’
    • ‘The team also found cases of night blindness caused by the lack of vitamin A.’
    • ‘The earliest symptoms of vitamin A deficiency are night blindness.’
    • ‘Patients might also have bone pain, muscle cramps, night blindness, and easy bruising as a result of malabsorption of fat-soluble vitamins.’
    • ‘Although it was well known that deficiency of vitamin A caused night blindness, we were the first to demonstrate the actual damage of the rods and cones of the retina of new born monkeys, following maternal deficiency of vitamin A.’


night blindness

/nīt ˈblīn(d)nis/