Photosensitive protein complexes of varied light absorption properties which are expressed in the PHOTORECEPTOR CELLS. They are OPSINS conjugated with VITAMIN A-based chromophores. Chromophores capture photons of light, leading to the activation of opsins and a biochemical cascade that ultimately excites the photoreceptor cells.

Synonyms: Pigment, Retinal, Retinal Pigment, Visual Pigment, Retinal Photoreceptor Pigments, Pigment, Visual, Pigments, Visual, Retinal Photoreceptor Pigment, Pigments, Retinal, Visual Pigments, 0, Retinal Pigments, Pigments, Retinal Photoreceptor, Photoreceptor Pigment, Retinal, Pigment, Retinal Photoreceptor, Photoreceptor Pigments, Retinal