2024年3月25日 · The superior orbital fissure is a large, triangular-shaped opening at the apex of the orbit. It is situated between the greater and lesser wings of the sphenoid bone and lies just lateral to the optic canal.

2023年8月10日 · Superior orbital fissure (SOF): This crack in the middle cranial fossa, that lies just posterior and lateral to the optic canal, can be better appreciated if viewed from the front, as it lies at the back of the eye orbit or socket. As mentioned earlier, a fissure is usually located between two structures, and in this case, the superior orbital ...

2023年8月8日 · The optic canal is a funnel-like structure as part of the sphenoid bone that extends from the optic foramen to the orbital apex, the posterior-most end of the orbit. The orbital apex consists of the optic canal and the superior orbital fissure.

2024年3月6日 · The optic canal is a round opening located in the posteromedial part of the orbit, within the lesser wing of the sphenoid bone, when viewing the orbit from an anterior perspective. It lies just medial to the larger superior orbital fissure, and serves as a conduit connecting the orbit to the middle cranial fossa.

2023年7月24日 · The optic canal is located medially to the superior orbital fissure and transmits the optic nerve (CNII). The optic nerve transmits visual input from the retina to the brain.

2023年7月24日 · Passing through the superior orbital fissure and the common tendinous ring are the superior and inferior divisions of CN III (oculomotor), the nasociliary branch of CN V1, sympathetic roots of the ciliary ganglion, and CN VI (abducens). The inferior orbital fissure lies on the floor of the orbit.

The walls of the orbit angle posteriorly towards the optic canal to form the orbital apex. The average dimensions of the orbit are as follows: [2] Bones of the orbital rim include the frontal bone (superior rim), zygomatic bone (lateral, medial, and inferior rim) and maxillary bone (inferior rim).

The optic canal is located in the sphenoid bone medial to the SOF extending in a superior medial direction from the orbital apex to the optic foramen ( Figs. 2 and 3). The optic canal is funnel-shaped, narrower anteriorly near the orbit, and is bounded laterally by the lesser wing of the sphenoid and anterior clinoid process and medially by the ...

The osseous OA is formed by the superior orbital fissure and the optic canal (Figures 1 and 2). The optic canal is located in the superomedial corner of the OA and its contents include the optic nerve and ophthalmic artery ( Table 1 ).

2023年4月21日 · The superior orbital fissure is the communication between the cavernous sinus and the apex of the orbit. It is straddled by the tendinous ring which is the common origin of the four rectus muscles (extraocular muscles). Gross anatomy Boundaries. medial: body of sphenoid. superior: lesser wing of sphenoid. inferior: greater wing of sphenoid