ColorRetinal Cone Photoreceptor CellsColor PerceptionGrowth ConesColor VisionColor Perception TestsColor Vision DefectsCone OpsinsUltrasonography, Doppler, ColorHair ColorEye ColorPigmentationRetinal Rod Photoreceptor CellsRod OpsinsRetinal PigmentsPhotoreceptor CellsElectroretinographyEchocardiography, Doppler, ColorOpsinsRetinaDark AdaptationPhotic StimulationAdaptation, OcularLightingVision, OcularLightProsthesis ColoringColorimetryCone-Beam Computed TomographySkin PigmentationPhotoreceptor Cells, VertebrateMicrospectrophotometryRetinal DegenerationContrast SensitivityAxonsSensory ThresholdsEye ProteinsPsychophysicsRetinitis PigmentosaSemaphorin-3AFeathersFovea CentralisNeuritesAmbystomaSpectrophotometryPhotographyPigments, BiologicalRetinal Bipolar CellsVisual PathwaysRetinal Horizontal CellsTransducinNeuronscis-trans-IsomerasesRhodopsinGoldfishLight Signal TransductionReceptor, Melanocortin, Type 1Flicker FusionButterfliesTime FactorsAnthocyaninsPattern Recognition, VisualFundus OculiRetinal Ganglion CellsArrestinUrodelaCyclic Nucleotide-Gated Cation ChannelsDiscrimination (Psychology)Visual FieldsRetinaldehydeDental PolishingOphthalmoscopyPseudopodiaTurtlesMacacaChick EmbryoCyclic Nucleotide Phosphodiesterases, Type 6Visual AcuityFood PackagingConus SnailMeatFood Coloring AgentsBlood Flow VelocityVisual PerceptionLizardsLeber Congenital AmaurosisImage Processing, Computer-AssistedSensitivity and SpecificityGrasshoppersGanglia, SpinalForm PerceptionOptics and PhotonicsNatureDarknessFluorescent Antibody Technique, IndirectPhenotypeMacaca fascicularisReproducibility of ResultsFlowersNight Blindness