The ciliary arteries are divisible into three groups, the long posterior, short posterior, and the anterior.
- The short posterior ciliary arteries from six to twelve in number, arise from the ophthalmic as it crosses the optic nerve.
- The long posterior ciliary arteries, two in number, pierce the posterior part of the sclera at some little distance from the optic nerve.
The ophthalmic artery and its branches
Iris, front view.
The terminal portion of the optic nerve and its entrance into the eyeball, in horizontal section.