Blood vessels of the eyeball (English)

Transverse section through the eyeball. The main arterial supply arises from the ophthalmic artery, a branch of the internal carotid artery. It gives rise to several ocular branches, such as the central retinal artery, muscular branches (which give rise to the anterior ciliary arteries), as well as the long and short posterior ciliary arteries. The central retinal artery supplies the optic nerve and the innermost layers of the retina. The ciliary arteries supply the choroid and the outermost layers of the retina. The anterior ciliary arteries and the posterior ciliary arteries anastomose to form the minor and major arterial circle of the iris. Venous drainage occurs via the vorticose veins and the central retinal vein into the superior and inferior ophthalmic veins.