Cone OpsinsOpsinsRod OpsinsRetinaRetinal Cone Photoreceptor CellsRetinal Rod Photoreceptor CellsPhotoreceptor Cells, VertebrateDrug Inverse AgonismTransducinVision, OcularRetinaldehydeRetinal Pigmentscis-trans-IsomerasesEye ProteinsRhodopsinGrowth ConesPhotoreceptor CellsMicrospectrophotometryElectroretinographyDark AdaptationLight Signal TransductionRetinal DegenerationLightRetinal Ganglion CellsColor VisionEyeCompound Eye, ArthropodPhotoreceptor Cells, InvertebrateFluorescent Antibody Technique, IndirectG-Protein-Coupled Receptor Kinase 1Retinitis PigmentosaPhylogenyHydrozoaAmbystomaArrestin