scotopia
/skə(ʊ)ˈtəʊpɪə/Physiology
noun
Vision in conditions of low light, specifically when the eye is adapted to such conditions; dark-adapted vision; night vision.
- Such vision involves mainly the rods of the retina..
Origin
Early 20th century; earliest use found in John Herbert Parsons (1868–1957), ophthalmologist and physiologist. From scoto- + -opia; apparently coined by J. H. Parsons. Compare photopia.