Dark AdaptationPhotoreceptor CellsLightAdaptation, OcularPhotoreceptor Cells, VertebrateRetinal Cone Photoreceptor CellsElectroretinographyPhotoreceptor Cells, InvertebrateAdaptation, PhysiologicalRetinaDarknessRhodopsinRetinal Rod Photoreceptor CellsRetinal DegenerationNight BlindnessVision, OcularPhycomycesRetinal PigmentsRod OpsinsNight VisionSensory ThresholdsLight Signal TransductionPhotic StimulationRetinaldehydeEye ProteinsOpsinsRetinitis PigmentosaVitamin A DeficiencyVitamin AOcular Physiological PhenomenaFlicker FusionChlorofluorocarbons, MethaneCathode Ray TubeUrodelaRetinal Photoreceptor Cell Outer SegmentRod Cell Outer SegmentRetinoidsPigment Epithelium of EyeAdaptation, BiologicalFundus Oculicis-trans-IsomerasesPhotoreceptor Connecting CiliumPhotoreceptors, PlantColor Vision DefectsRetinal DiseasesColor PerceptionTime FactorsMacular DegenerationEtherPupilDigestive System DiseasesFovea CentralisVisual AcuityColor Perception TestsMutationPhotoreceptors, MicrobialPsychophysiologyTransducinArrestinBruch MembraneCyclic Nucleotide Phosphodiesterases, Type 6PhytochromeKineticsBacteriorhodopsinsAmbystomaPhotometryEyeContrast SensitivityPhotochemistryCircadian RhythmCryptochromesFluorescent Antibody Technique, IndirectElectrooculographyNepalHorseshoe CrabsRadiation Injuries, ExperimentalElectrophysiologyMice, Inbred C57BLRetinal Pigment EpitheliumMolecular Sequence DataDrosophila ProteinsVisual PerceptionRetinal Bipolar CellsVision DisordersVisual FieldsPeripherinsRetinal Photoreceptor Cell Inner SegmentAnimals, Genetically ModifiedCone OpsinsRecoverinFungiMice, KnockoutVisual Field TestsCompound Eye, ArthropodRats, Mutant Strains3',5'-Cyclic-GMP PhosphodiesterasesCatsDrosophilaPhytochrome BAction Potentials