They pass forward with the optic nerve to reach the eyeball, piercing the sclera around the entry of the optic nerve into the eyeball.
[1] About 7 short posterior ciliary arteries accompany the optic nerve,[3] passing anterior-ward to reach the posterior part of[4] the eyeball, where they divide into 15-20 branches and pierce the sclera[3] around the entrance of the optic nerve.
[4][2] The short posterior ciliary arteries contribute arterial supply to the choroid, ciliary processes,[3] optic disc, the outer retina, and Bruch's membrane.
[1] Some branches of the short posterior ciliary arteries supply the optic disc by means of an anastomotic ring - the circle of Zinn-Haller or circle of Zinn - which is associated with the fibrous extension of the ocular tendons (common tendinous ring (also annulus of Zinn)).
[citation needed] ocular group: central retinal