Retinal Ganglion Cells. Figure 4.

Variation of ganglion cell population density and ganglion cell size across the cat retina. Left: Schematic map of the ganglion cell density in a whole retina; radial cuts were made to flatten the retina. From the region of highest ganglion cell density, the 10.1007/978-3-540-29678-2_1 in temporal retina, cell density decreases monotonically towards the retinal periphery. The open circle signifies the optic nerve head. Right: Dye-injected alpha and beta ganglion cells at three distances from the area centralis, showing that dendritic field size increases as cell density decreases, while the size difference between alpha and beta cells is maintained. D, dorsal; V, ventral; N, nasal; T, temporal. The left scale bar applies to the map, the right scale bar to the individual cells. Modified from Peichl (1990) Optometrie 3/1990:3–12.