Circulus_arteriosus_major
Major arterial circle of the iris"[1][2][3] (also: "major circulus arteriosus of iris",[4] or "circulus arteriosus iridis major"[4]) is a circular artery[3] of the eye formed by anastomoses of the anterior ciliary arteries and long posterior ciliary arteries at the ciliary body.[1][2][3] It supplies arterial blood to the iris,[1][3] ciliary processes of[1] the ciliary body,[3] and anterior choroid.[1]
The major arterial circle of the iris is situated within the ciliary stroma[3] in the anterior part of the ciliary body[1] near the root of the iris.[1][3]