General Neurology
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Feb. 26, 2024
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Structures of the left orbital apex schematic diagram
Legend: 1, optic nerve; 2, optic artery; 3, common tendinous ring (annulus of Zinn); 4, lacrimal nerve (the smallest branch of V1); 5, frontal nerve (the largest branch of V1); 6, trochlear nerve (IV); 7, superior ophthalmic vein; 8, superior branch of the oculomotor nerve (III); 9, nasociliary nerve (branch of V1); 10, abducens nerve (VI); 11, lower branch of the oculomotor nerve (III); 12, inferior ophthalmic vein; 13, optic canal; 14, superior segment of the superior orbital fissure; 15, inferior segment of the superior orbital fissure.
(Courtesy of Wojtin, 2011. Creative Commons Attribution 3.0 Unported [CC BY 3.0] license, creativecommons.org/licenses/by/3.0. Illustration edited and legend translated and modified by Dr. Douglas J Lanska.)