Mice, KnockoutPhenotypePhotoreceptor CellsPhotoreceptor Cells, VertebratePhotoreceptor Cells, InvertebrateRetinal Cone Photoreceptor CellsRetinal DegenerationRetinaLightRod OpsinsRhodopsinEye ProteinsElectroretinographyRetinal Photoreceptor Cell Outer SegmentMice, Inbred C57BLRod Cell Outer SegmentPhotoreceptor Connecting CiliumDark AdaptationLight Signal TransductionPhotoreceptors, PlantOpsinsVision, OcularRetinitis PigmentosaGene Knockout TechniquesRetinal PigmentsPhotoreceptors, MicrobialArrestinCyclic Nucleotide Phosphodiesterases, Type 6TransducinAdaptation, OcularFluorescent Antibody Technique, IndirectMice, Mutant StrainsEyePigment Epithelium of EyeMice, TransgenicDarknessRadiation Injuries, ExperimentalDisease Models, AnimalCryptochromesPhytochromeHorseshoe CrabsRetinal Pigment EpitheliumMice, Inbred StrainsMice, Inbred BALB CPeripherinsRetinal Photoreceptor Cell Inner SegmentMutationAnimals, Genetically ModifiedDrosophila ProteinsCone OpsinsRetinal Bipolar CellsRecoverinMolecular Sequence DataRats, Mutant StrainsImmunohistochemistrySpleenCompound Eye, Arthropod3',5'-Cyclic-GMP PhosphodiesterasesRetinaldehydeNerve Tissue ProteinsPhotic StimulationRNA, MessengerRetinal DiseasesUrodelaRetinal Horizontal CellsSignal TransductionG-Protein-Coupled Receptor Kinase 1Guanylate Cyclase-Activating ProteinsCells, CulturedDrosophilaMicrospectrophotometrycis-trans-IsomerasesCell DifferentiationIn Situ Nick-End LabelingBlotting, WesternRetinal DetachmentMice, Inbred C3HCell CountRetinal NeuronsTime FactorsThoracicaGene Expression Regulation, DevelopmentalAmino Acid SequenceHippocalcinCyclic Nucleotide-Gated Cation ChannelsPhytochrome AFlavoproteinsPhytochrome BLeber Congenital AmaurosisReverse Transcriptase Polymerase Chain ReactionIn Situ HybridizationRetinal Ganglion CellsMicroscopy, ConfocalGene ExpressionGene Expression RegulationZebrafishMolluscaApoptosisMembrane ProteinsPhototropism