ColorPigments, BiologicalPigment Epithelium of EyeColor PerceptionRetinal PigmentsColor VisionColor Perception TestsUltrasonography, Doppler, ColorColor Vision DefectsPigmentationHair ColorBile PigmentsEye ColorChromatophoresSkin PigmentationMelanophoresRetinal Cone Photoreceptor CellsRod OpsinsMelaninsEchocardiography, Doppler, ColorLightColorimetryEye ProteinsLipofuscinPhotoreceptor CellsProsthesis ColoringMicrospectrophotometryCarotenoidsSpectrophotometryMacula LuteaXanthophyllsLightingRetinaldehydeFeathersAnthocyaninsChoroidMacular DegenerationLuteinPhotic StimulationSerpinsRhodopsinButterfliesMelanosomesMelanocytesFundus OculiBruch MembraneFluorescein AngiographyOpsinsDark AdaptationPhotometryChlorophyllContrast Sensitivitycis-trans-IsomerasesEyeVision, OcularRetinal DiseasesPhotoreceptor Cells, VertebratePigmentation DisordersElectroretinographyReceptor, Melanocortin, Type 1Retinal DegenerationCone OpsinsSpectrum AnalysisPhotographyRetinal DetachmentIrisPsychophysicsRetinal Rod Photoreceptor CellsAgouti Signaling ProteinMolecular Sequence DataColoring AgentsProdigiosinPhenotypeAlbinismRetinoidsSensory ThresholdsTime FactorsMonophenol MonooxygenasePhylogenyNerve Growth FactorsFood Coloring AgentsPhotoreceptor Cells, InvertebrateVisual AcuityChoroidal NeovascularizationIodatesBilirubinPattern Recognition, VisualFluorescenceCells, CulturedRod Cell Outer SegmentPhotochemistryLizardsFovea CentralisMeatMutationCattleFishesDiscrimination (Psychology)FlowersUltraviolet Rays