The internalized part of the central retinal artery could also provide arterial supply to the nerve here. Collateral blood supply arising from the center meningeal branch of the external carotid arterymay also supply the intraorbital CN II near the orbital apex. However, a minority of these fibers will bypass the lateral geniculate body to terminate…
Nerve signals travel across the optic nerve from each eye and send visual information to the mind. The optic stalk is apparent through the fourth gestational week and ultimately becomes the optic nerve. The lumen of the optic stalk is continuous with the diencephalon of the forebrain proximally, and the optic vesicle distally. The lateral…
During gestational week 8, there is subsequent differentiation of the glial cell populations into type 1 and type 2 astrocytes, and oligodendrocytes. Venous tributaries from all parts of the optic nerve eventually drain to the central retinal vein. It then drains either to the superior ophthalmic vein or straight into the cavernous sinus. The nerves…