A QUANTITATIVE STUDY OF GANGLION-CELLS IN THE GOAT RETINA

As in a number of mammals, the most prominent feature of the ganglion- cell layer in the retina of the murciano-granadina goat is an increase in the density of ganglion cells in the central area, as well as a co ncentration along a ridge extending horizontally across the retina, be low the optic disc, and in the upper temporal retina. Thus, there is a n area of maximum density and two streaks that are known as the 'horiz ontal' and 'vertical' streak. The isodensity lines of ganglion-cell di stribution is roughly concentric, with their values varying from 304 c ells/mm(2) in the periphery to 3592 cells/mm(2) in the central area, w ith the cells densely packed. There were some individual differences a mongst the animal studied, although all of them were purebred animals.