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EntityQ7758678· pop 64· linked from 398 articles

night blindness

Also known as Nyctalopia

Nyctalopia (; ), also called night blindness, is a condition making it difficult or impossible to see in relatively low light. It is a symptom of several eye diseases. Night blindness may exist from birth, or be caused by injury or malnutrition (for example, vitamin A deficiency). It can be described as insufficient adaptation to darkness.

AI overview

Night blindness is a condition that makes it difficult or impossible to see in low light, and it can result from various eye diseases, injuries, malnutrition, or be present from birth. It matters because it significantly impacts a person's ability to function in dim environments and can sometimes signal an underlying health problem that may need treatment.

AI-generated from the Wikipedia summary — may contain errors.

Key facts

Medical condition.name: Nyctalopia
Medical condition.image: 260px
Medical condition.caption: Effect of night blindness. Left: normal night vision. Right: night-blind vision.
Medical condition.synonym: Night blindness

via Wikipedia infobox

Research

2,833 papers

Congenital Stationary Night Blindness.ReviewAdvances in experimental medicine and biology · 2025Cheong J, Tsang SH, Sharma TDOI: 10.1007/978-3-031-72230-1_13
Congenital Stationary Night Blindness.ReviewAdvances in experimental medicine and biology · 2018Tsang SH, Sharma TDOI: 10.1007/978-3-319-95046-4_13
Isotretinoin and night blindness.ReviewThe Australasian journal of dermatology · 2014Teo K, Yazdabadi ADOI: 10.1111/ajd.12107
Congenital stationary night blindness: an update and review of the disease spectrum in Saudi Arabia.ReviewActa ophthalmologica · 2021Almutairi F, Almeshari N, Ahmad K et al.DOI: 10.1111/aos.14693
Gene therapy shines light on congenital stationary night blindness for future cures.ReviewJournal of translational medicine · 2025Zhang Y, Lin S, Yu L et al.DOI: 10.1186/s12967-025-06392-8
Congenital Stationary Night Blindness: Clinical and Genetic Features.International journal of molecular sciences · 2022Kim AH, Liu PK, Chang YH et al.DOI: 10.3390/ijms232314965
Night blindness.Scientific American · 1966Dowling JEDOI: 10.1038/scientificamerican1066-78
Congenital stationary night blindness: an analysis and update of genotype-phenotype correlations and pathogenic mechanisms.ReviewProgress in retinal and eye research · 2015Zeitz C, Robson AG, Audo IDOI: 10.1016/j.preteyeres.2014.09.001

via PubMed

~5 min read

Encyclopedic overview

6 sections

Contents

Causes
Treatment
Historical usage
Nyctalopia in animals
References
External links

The most common cause of nyctalopia is retinitis pigmentosa, a disorder in which the rod cells in the retina gradually lose their ability to respond to the light. Patients with this genetic condition have progressive nyctalopia and, eventually, their daytime vision may also be affected. In X-linked congenital stationary night blindness, from birth the rods either do not work at all, or work very little, but the condition does not get worse.

Excerpted from Wikipedia’s “night blindness” article, available under the CC BY-SA 4.0 licence.

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