IliumLipCleft LipLightingLip NeoplasmsDental PolishingLip DiseasesSurface PropertiesOptical PhenomenaDepth PerceptionRefractometryForm PerceptionContrast SensitivityColorCleft PalateOcular Physiological PhenomenaComposite ResinsPhotic StimulationPsychophysicsLightVision, BinocularVisual PerceptionMaterials TestingTabletsMicroscopy, Electron, ScanningModels, TheoreticalPattern Recognition, VisualFacial MusclesCheilitis