Reflex, PupillaryPupilRod OpsinsLightLight Signal TransductionTropicamideAnisocoriaMiosisIrisRetinal Ganglion CellsPupil DisordersVision, OcularPhotoreceptor Cells, VertebratePhotic StimulationRetinal Cone Photoreceptor CellsRetinal DegenerationRetinal Rod Photoreceptor CellsTonic PupilCircadian RhythmVideo RecordingRetinaMydriaticsMydriasisMice, Inbred C57BL