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 anterior ciliary arteries are derived from the muscular branches of the ophthalmic artery.
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