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Vascular supply of the afferent visual system. The intraorbital optic nerve and eye are supplied by branches of the ophthalmic artery. The intracranial optic
nerve is supplied by the internal carotid artery, located laterally, as well as the anterior cerebral artery and the anterior communicating artery, located
superiorly. The chiasm is positioned with in the circle of Willis and receives its blood supply from multiple sources. The major vascular supply of the optic
tract is the anterior choroidal artery—a branch of the middle cerebral artery—but branches of the posterior cerebral artery also participate. The lateral
geniculate nucleus has a dual vascular supply: the anterior choroidal artery branching from the middle cerebral artery, and the lateral choroidal artery, a
branch of the posterior cerebral artery. The middle cerebral artery travels over the lateral surface of the brain, yielding branches that penetrate into the
Source: Disorders of the Chiasm and Retrochiasmal Visual Pathways, Practical Neuroophthalmology
parietal and temporal lobes to supply the optic radiations. Most of the primary visual cortex is supplied by the posterior cerebral artery, however, the tip of
Citation:
Martin
TJ, Corbett
JJ. Practical
Neuroophthalmology;
2013 Available
the occipital cortex
is a
watershed
zone between
the middle
and posterior cerebral
arteries.at: http://mhmedical.com/ Accessed: April 29, 2017
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