visual pigment

(redirected from Ommochrome)
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visual pigment

A light-absorbing compound in the photoreceptor cells of the retina that converts light energy into a nerve impulse that is passed from the receptor cells to the optic nerve.
See also: pigment
References in periodicals archive ?
The functional morphology of color changing in a spider: development of ommochrome pigment granules.
We found that the same gene that codes for the red in Heliconius wings was already identified as a gene called optix that is involved in eye development in other organisms," said co-author Heather Hines, "It is intriguing that the ommochrome pigments that colour these wings red are also expressed in the eye.
The long-wavelength shift in peaks between the behavioral response spectrum and the electrophysiological sensitivity spectrum could result from lateral filtering by ommochromes and serial filtering by distal rhodopsins and metarhodopsins.