Anatomic LandmarksCadaverTomography, X-Ray ComputedImaging, Three-DimensionalReproducibility of ResultsMagnetic Resonance ImagingHoming BehaviorModels, AnatomicCephalometryChinMesopic VisionEncyclopedias as TopicRetinaPhotoreceptor Cells, VertebrateVision, OcularLightRetinal Cone Photoreceptor Cells