title: The receptor mosaic of Aotes trivirgatus: distribution of rods and cones.
abstract: The distribution and density of rods and cones have been determined in the temporal retina of the owl monkey Aotes trivirgatus. Rod density varied from 175,000/mm2 in the far periphery to 387,000/mm2 in the area centralis. Cone density was 4000/mm2 in the periphery and 7300/mm2 within the central retinal area. Variation of densities across the retina was continuous but the ratio of rods to cones remained about 50:1 at all locations. The cones are not randomly scattered, but are separated by distances of about 10 mu in central retina and 13 mu in peripheral retina.
mesh_terms: D000818:Animals; D001029:Aotus trivirgatus / Q000033:anatomy & histology*; D002452:Cell Count; D000882:Haplorhini / Q000033:anatomy & histology*; D010786:Photoreceptor Cells / Q000033:anatomy & histology* / Q000648:ultrastructure; D012160:Retina / Q000033:anatomy & histology / Q000166:cytology