Anatomy and Origin
- The long ciliary nerves branch from the nasociliary nerve as it crosses the optic nerve (CN II).
- The long ciliary nerves originate from the nasociliary nerve.
- The nasociliary nerve crosses the optic nerve (CN II).
- The long ciliary nerves pierce and enter the posterior part of the sclera near where it is entered by the optic nerve.
- The entry point of the long ciliary nerves is near where the optic nerve enters the sclera.
- The long ciliary nerves run between the sclera and the choroid.
- The long ciliary nerves accompany the short ciliary nerves.

Function
- The long ciliary nerves provide sensory innervation to the eyeball, including the cornea.
- The long ciliary nerves contain post-ganglionic sympathetic fibers from the superior cervical ganglion for the dilator pupillae muscle.
- Sympathetic fibers to the dilator pupillae muscle mainly travel in the nasociliary nerve.
- There are also sympathetic fibers in the short ciliary nerves that pass through the ciliary ganglion without forming synapses.
- The long ciliary nerves play a role in controlling the dilation of the pupil.

Course
- The long ciliary nerves run anterior-ward between the sclera and the choroid.
- The course of the long ciliary nerves is anterior-ward.

Related
- Short ciliary nerves are related to the long ciliary nerves.
- The ciliary ganglion is involved in the pathway of the long ciliary nerves.
- The long ciliary nerves are part of the ophthalmic nerve.
- Grays Anatomy: The Anatomical Basis of Clinical Practice is a reference book that includes information about the long ciliary nerves.
- The long ciliary nerves are classified as a neuroanatomy stub.

Summary
- The long ciliary nerves branch from the nasociliary nerve and provide sensory innervation to the eyeball, including the cornea.
- They also contain sympathetic fibers for the dilator pupillae muscle and play a role in controlling pupil dilation.
- The long ciliary nerves run between the sclera and the choroid, and their course is anterior-ward.
- They are related to the short ciliary nerves and are part of the ophthalmic nerve.
- Additional information about the long ciliary nerves can be found in Grays Anatomy: The Anatomical Basis of Clinical Practice.