title: Optical function of myoids.
mesh_terms: D000818:Animals; D001001:Anura; D008858:Microscopy, Phase-Contrast; D055095:Optics and Photonics; D010786:Photoreceptor Cells / Q000502:physiology*; D011892:Rana catesbeiana; D011894:Rana pipiens; D012160:Retina / Q000502:physiology; D012168:Retinal Pigments
chemical_list: D012168:Retinal Pigments