Short Ciliary Nerve in a Section of the Skull, Gross Anatomy

Description

Within a sectioned male skull, the globe sits centrally in the bony orbit with the sclera encasing the anterior segment and the optic nerve exiting posteriorly at the optic disc. A short ciliary nerve courses anteriorly from the posterior orbit toward the eyeball, then pierces the sclera in a peripapillary ring around the optic nerve entrance, where multiple small neurovascular channels typically traverse the scleral coat. Adjacent orbital anatomy is implied by the osseous walls, and the relationship between the nerve, posterior pole of the globe, and optic nerve sheath can be appreciated in one field. Small episcleral vessels are rendered on the scleral surface. Clear landmarks. Short ciliary nerves carry postganglionic parasympathetic fibers from the ciliary ganglion to the sphincter pupillae and ciliary muscle, along with sympathetic fibers and sensory afferents, so their position near the optic nerve head and posterior sclera matters when discussing pupillary responses and accommodation. This posterior approach also frames structures that can be injured during retrobulbar anesthesia, posterior scleritis workup, or orbital decompression, where needle trajectory or dissection too close to the optic nerve sheath risks hemorrhage, diplopia, or vision loss. For teaching, the peripapillary scleral perforations help explain why inflammation or mass effect at the orbital apex can produce combined optic neuropathy and ocular autonomic dysfunction. Use this artwork in neuroanatomy and ophthalmology courses when introducing the ciliary ganglion, short ciliary nerves, and their entry into the globe, or in surgical texts outlining retrobulbar block anatomy and posterior segment approaches. It also fits patient education and clinical presentations on anisocoria, Adie pupil, and orbital apex syndromes where pathway-level localization matters. Anatomical accuracy verified by SciePro's Medical Advisory Board.