Ratio between cones (in the foveola), midget bipolars and midget ganglion cells (in the fovea walls)

Range cones:midget bipolars:midget ganglion cells=1:2:2 unitless
Organism Primates
Reference Bringmann A. Structure and function of the bird fovea. Anat Histol Embryol. 2019 May48(3):177-200. doi: 10.1111/ahe.12432 p.180 left column top paragraphPubMed ID30734347
Primary Source Polyak, S. L. (1941). The retina. Chicago, IL: University of Chicago Press AND Wässle H, Boycott BB. Functional architecture of the mammalian retina. Physiol Rev. 1991 Apr71(2):447-80 DOI: 10.1152/physrev.1991.71.2.447PubMed ID2006220
Comments P.179 right column: "The dense packing of cone receptors in the foveola associated with the midget system of neurons in the fovea walls, that is the 1:2:2 ratio between cones, midget bipolars and midget ganglion cells, is the main basis of high acuity vision provided by the primate fovea (primary sources)."
Entered by Uri M
ID 117190