Electron Microscopy - Optic Nerve Circulation

A simple vascular casting technique utilizing a low viscosity plastic was used to study the ocular microcirculation. Morrphologic findings on scanning electron microscopy of the ciliary circulation of the posterior pole in primates are presented. The prelaminar region of the optic disc received most of its blood supply from the short posterior ciliary arteries, mainly from direct branches arising from peripapillary arterioles surrounding the optic nerve but also from indirect branches from the peripapillary choroid.