Note the physiologic shape of the neuroretinal rim and the size of the optic cup in relation to the size of the optic disc. In normal eyes the areas of the optic disc and optic cup are correlated to each other (i.e., the larger the disc, the larger the cup). In most normal optic discs, the inferior neuroretinal rim is wider than the other quadrants. Note also the excellent visibility of the nerve fiber layer.
