Long posterior ciliary arteries

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Long posterior ciliary arteries
The arteries of the choroid and iris. The greater part of the sclera has been removed.
Iris, front view.
Source ophthalmic artery
Supplies iris
ciliary body
Latin Arteriae ciliares posteriores longae
TA A12.2.06.032
FMA 70778
Anatomical terminology

The long posterior ciliary arteries are arteries of the head arising, together with the other ciliary arteries, from the ophthalmic artery. There are two in each eye.


They pierce the posterior part of the sclera at some little distance from the optic nerve, and run forward, along either side of the eyeball, between the sclera and choroid, to the ciliary muscle, where they divide into two branches.

These form an arterial circle, the circulus arteriosus major, around the circumference of the iris, from which numerous converging branches run, in the substance of the iris, to its pupillary margin, where they form a second (incomplete) arterial circle, the circulus arteriosus minor.


The long posterior ciliary arteries supply the iris, ciliary body and choroid.

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This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

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