Definition of idioretinal in US English:

idioretinal

adjective

Psychology
  • Designating the faint sensation of light resulting from intrinsic (rather than external) excitation of the retina.

Origin

Late 19th century; earliest use found in John S. Billings (1838–1913).

Pronunciation

idioretinal

/ˌɪdɪə(ʊ)ˈrɛtɪnl/