Microradiograph of eye; central optic pathways and related structures
Relations of optic pathways at base of brain.
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Image #58A-5
Microradiograph of eye; central optic pathways and related structures
Relations of optic pathways at base of brain.
The specimen shown in the preceding photograph has been reoriented for this view so that the left orbit extends above and to the left of the area included in the photograph. The brain stem has been cut across through the rostral part of the mesencephalon. The left optic tract has been removed and the optic chiasm has been lifted slightly out of its normal position. The components of the arterial circle of Willis that are related to the optic pathways (i.e., internal carotid artery (6), anterior cerebral artery (5), anterior communicating artery (between 5 and 19, unlabeled), posterior communicating artery (8) and posterior cerebral artery (11)) remain in position.