Lateral Perspective Showing the Eyes (Orbit In A Skull Section)

Description

Viewed from the left lateral aspect in skull section, the globe (bulbus oculi) sits centrally within the orbital cavity, bounded anteriorly by the orbital rim and posteriorly by the orbital apex. Extraocular muscles encircle the sclera and converge posteriorly toward the common tendinous ring, their bellies occupying the intraconal space while vessels and fat fill the extraconal compartments. Posterior to the globe, the optic nerve (CN II) exits through the optic canal toward the middle cranial fossa, with the ophthalmic artery and accompanying veins coursing in close proximity. Adjacent bony relationships are clear, including the maxilla inferiorly, the nasal cavity medially, and the paranasal sinus spaces within the midface skeleton. A lateral section like this clarifies why the orbit behaves as a crowded cone: small shifts in volume translate into proptosis, optic nerve stretch, and limitation of gaze. It is the cleanest way to teach the spatial logic behind orbital blowout fractures, where the thin orbital floor over the maxillary sinus fails and the inferior rectus or orbital fat can become entrapped, producing diplopia on upgaze and an abnormal forced-duction test. The posterior clustering of CN II and the ophthalmic vessels also frames clinical urgency in orbital apex syndrome and compressive optic neuropathy. Use this artwork in head and neck anatomy modules to pair bony orbit boundaries with the intraconal versus extraconal concept, or in ophthalmology teaching on strabismus mechanics and optic nerve pathways. It also supports surgical orientation for lateral orbitotomy planning, endoscopic sinus approaches near the lamina papyracea, and radiology captions when correlating CT orbital sections with named walls and canals. Anatomical accuracy verified by SciePro's Medical Advisory Board.