FIGURE 22.20 ■ A posterior region of primate eyeball illustrating the optic
nerve as it leaves the eyeball at the optic papilla. Stain: hematoxylin and eosin.
×25.
FIGURE 22.21 ■ A section of primate retina illustrating different layers. Stain:
hematoxylin and eosin. ×205.
951