Definition of photopia in English:

photopia

noun

Physiology
rare
  • Vision in conditions of bright light; light-adapted vision; photopic vision.

Origin

Early 20th century; earliest use found in John Herbert Parsons (1868–1957), ophthalmologist and physiologist. From photo- + -opia; apparently coined by J. H. Parsons.

Pronunciation

photopia

/fəʊˈtɒpɪə//fəʊˈtəʊpɪə/