The Long Ciliary Arteries are small blood vessels that supply oxygenated blood to the eye, specifically the outer layers of the eyeball. They branch off from the ophthalmic artery, which is a major artery that provides blood to the eye and surrounding structures. Each eye typically has two long ciliary arteries, which run along the length of the eyeball. These arteries play a crucial role in maintaining the health of the eye by delivering nutrients and oxygen. They also contribute to the vascular supply of the iris and the cornea, helping to support the overall function of the visual system.