The iodopsin system found in the cones of the chicken retina is identical with the rhodopsin system in its carotenoids. It differs only in the protein-the opsin -with which carotenoid combines. The cone protein may be called photopsin to distinguish it from the scotopsins of the rods.

Vertebrate visual opsins are a subclass of ciliary opsins and mediate vision in vertebrates. They include the opsins in human rod and cone cells. They are often abbreviated to opsin, as they were the first opsins discovered and are still the most widely studied opsins. [1] Opsin refers strictly to the apoprotein (without bound retinal).

Iodopsin and P521 are present in the chicken or gecko retina in relatively large quantities (30–50% of the level of rhodopsin). Because the characteristics of cone visual pigments were quite different from those of rhodopsin, it was possible to clarify several basic properties of cone visual pigments without using isolated samples.

Iodopsin, the chicken red-sensitive cone visual pigment, is located at outer segments of both the red single cones and the double cones, while the other single cones and the rod contain their own visual pigments with different absorption spectra.

iodopsin a photochemical pigment contained within CONE CELLS present in the retina of most vertebrate eyes. Iodopsin consists of RETINOL and a protein, which is different for each of the three cone pigments and as a result each of the pigments has a different colour.

视紫蓝质（iodopsin），眼球感光物质。与明视觉有关。是脊椎动物视锥细胞中含有的一种对光高度敏感的视色素。与视紫红质相似，由发色团视黄醛及视蛋白两部分结合而成。

Iodopsin, the chicken red-sensitive cone visual pigment, is located at outer segments of both the red single cones and the double cones, while the other single cones and the rod contain their own visual pigments with different absorption spectra.

The iodopsin system found in the cones of the chicken retina is identical with the rhodopsin system in its carotenoids. It differs only in the protein—the opsin —with which carotenoid combines. The cone protein may be called photopsin to distinguish it …

iodopsin /ˌaɪəˈdɒpsɪn/ 1.N a violet light-sensitive pigment in the cones of the retina of the eye that is responsible for colour vision 视紫蓝质 (Also called visual violet) → see also rhodopsin [1]

The meaning of IODOPSIN is a photosensitive violet pigment in the retinal cones that is similar to rhodopsin but more labile, is formed from vitamin A, and is important in daylight vision.