Photoreceptor CellsPhotoreceptor Cells, VertebratePhotoreceptor Cells, InvertebrateRetinal Cone Photoreceptor CellsRetinal DegenerationRetinaRhodopsinEye ProteinsRod OpsinsLightRetinal Rod Photoreceptor CellsRod Cell Outer SegmentElectroretinographyRetinal Photoreceptor Cell Outer SegmentVision, OcularDark AdaptationRetinitis PigmentosaLight Signal TransductionRetinal PigmentsArrestinOpsinsPhotoreceptor Connecting CiliumEyeTransducinRadiation Injuries, ExperimentalPigment Epithelium of EyeCyclic Nucleotide Phosphodiesterases, Type 6Fluorescent Antibody Technique, IndirectRecoverinDrosophila ProteinsRetinal DetachmentAdaptation, OcularPhotoreceptors, PlantAnimals, Genetically ModifiedRetinal Pigment EpitheliumRats, Mutant StrainsDrosophilaHippocalcinDarknessRetinal DiseasesHorseshoe CrabsG-Protein-Coupled Receptor Kinase 1Pineal GlandCompound Eye, ArthropodIn Situ Nick-End Labeling3',5'-Cyclic-GMP PhosphodiesterasesPeripherinsGuanylate Cyclase-Activating Proteinscis-trans-IsomerasesOcular Physiological PhenomenaMutationRetinal Bipolar CellsPhotoreceptors, MicrobialCone OpsinsRetinaldehydeDrosophila melanogasterRetinal NeuronsMice, Inbred C57BLMolecular Sequence DataRetinal Photoreceptor Cell Inner SegmentNerve Tissue ProteinsZebrafishPhotic StimulationOptic Lobe, NonmammalianLeber Congenital AmaurosisRetinol-Binding ProteinsMicrospectrophotometryImmunohistochemistryIn Situ HybridizationBlotting, WesternAmino Acid SequenceGTP-Binding Protein RegulatorsLipofuscinCryptochromesThoracicaPhytochromeGenes, InsectMice, Mutant StrainsRetinal Ganglion CellsDisease Models, AnimalCattleGene Expression Regulation, DevelopmentalMice, KnockoutApoptosisCell DeathMice, TransgenicCircadian RhythmGuanylate CyclaseCell CountNeurogliaCell SurvivalFundus OculiMicroscopy, ConfocalCyclic GMPCiliaCell DifferentiationRetinal DysplasiaRetinal DystrophiesDipteraUsher Syndromes