<physiology> The production of an optogram on the retina by the photochemical action of light on the visual purple; the fixation of an image in the eye. The object so photographed shows white on a purple or red background. See Visual purple, under Visual.

Origin: Optic.

(01 Mar 1998)

optional enrolment, opto-, optocoelia, optogram < Prev | Next > optokinetic, optokinetic nystagmus, optomeninx

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