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Structures of the orbital apex

Major (F) and minor (E) head of the medial rectus. (A) Superior rectus, (B) optic nerve with surrounding dural sheath, (C) lateral rectus, (D) levator palpebrae superioris, (G) inferior rectus.

(Source: Lacey H, Oliphant H, Smith C, Koenig M, Rajak S. Topographical anatomy of the annulus of Zinn. Sci Rep 2022;12[1]:1064. Creative Commons Attribution 4.0 International [CC BY 4.0] license, creativecommons.org/licenses/by/4.0.)

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