optogram
Op"to*gram, n. Etym: [Optic + -gram: cf. F. optogramme.] (Physiol.) Defn: An image of external objects fixed on the retina by the photochemical action of light on the visual purple. See Optography.
Op"to*gram, n. Etym: [Optic + -gram: cf. F. optogramme.] (Physiol.) Defn: An image of external objects fixed on the retina by the photochemical action of light on the visual purple. See Optography.