Dark AdaptationAdaptation, OcularAdaptation, PhysiologicalPhotoreceptor CellsLightElectroretinographyRetinal Rod Photoreceptor CellsDarknessPhycomycesNight BlindnessRetinal PigmentsRetinaRhodopsinSensory ThresholdsNight VisionVision, OcularRetinal Cone Photoreceptor CellsPhotic StimulationRetinaldehydeVitamin A DeficiencyFlicker FusionChlorofluorocarbons, MethaneCathode Ray TubeVitamin AOcular Physiological PhenomenaPhotoreceptor Cells, VertebrateColor PerceptionAdaptation, BiologicalRetinoidsRod OpsinsColor Vision DefectsRetinal DegenerationFundus OculiOpsinsColor Perception TestsLight Signal TransductionRetinitis PigmentosaPhotometryUrodelaEtherDigestive System DiseasesPhotochemistryTime FactorsPsychophysiologyPupilBacteriorhodopsinsFovea CentralisMacular Degenerationcis-trans-IsomerasesColorAmbystomaKineticsVisual AcuityContrast SensitivityNepalRetinal DiseasesBruch MembraneSpectrophotometryElectrooculographyLasersPigment Epithelium of EyeUltraviolet RaysFungiVisual PerceptionInfrared RaysOptics and PhotonicsSpectrum AnalysisSpectrometry, FluorescenceVisual FieldsVisual Field TestsVision DisordersElectrophysiologyMutationRefractometryEye ProteinsLightingCatsOxygenAction PotentialsOptical FibersSpectrophotometry, UltravioletHydrogen-Ion Concentration