|See also iodopsin Also called: visual purple a red pigment in the rods of the retina in vertebrates. It is dissociated by light into retinene, the light energy being converted into nerve signals, and is re-formed in the dark|
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rhodopsin rho·dop·sin (rō-dŏp'sĭn)
A thermolabile protein that is sensitive to red light and is found in the external segments of the rods of the retina of the eye. Also called visual purple.