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Related to iodopsin: photopsin


Any of a class of light-sensitive pigments found in the retinal cones of the vertebrate eye.


(Biochemistry) a violet light-sensitive pigment in the cones of the retina of the eye that is responsible for colour vision. Also called: visual violet See also rhodopsin


(ˌaɪ əˈdɒp sɪn)

a photosensitive violet pigment in the cones of the retina.
[1935–40; < Greek īṓd(ēs) violet-colored (derivative of íon violet) + (rhod)opsin]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.iodopsin - a violet photopigment in the retinal cones of the eyes of most vertebrates; plays a role in daylight vision
cone cell, retinal cone, cone - a visual receptor cell in the retina that is sensitive to bright light and to color
opsin - retinal protein formed by the action of light on rhodopsin
photopigment - a special pigment found in the rods and cones of the retina
References in periodicals archive ?
Takahashi, "Circadian regulation of iodopsin gene expression in embryonic photoreceptors in retinal cell culture," Neuron, vol.