Arteries of the Iris

Iris arteries are blood vessels that supply blood to the iris of the eye. They pass through the optical zone of the eye and participate in the blood supply and nutrition of the iris.

The iris is an anatomical structure located behind the pupil and consisting of three layers - outer, middle and inner. The outer layer consists of epithelium, which has follicles - structures that form the pigments of the iris. The middle layer contains blood vessels, muscles and fibers. The inner layer is represented by the autonomic nerve and sphincter.

The iris arteries arise from the foramen of Arnold in the orbital wall and pass through the posterior surface of the eyeball. In a healthy person, they are located medially from the sphincter and muscles of the iris, and between them and the wall of the eyeball there is a pigment layer and collagen fibers. During pathological processes, the artery may be displaced, compressed or subjected to pressure.

The structure of the iris arteries is very simple. They consist of a hard inner shell (tunica intima), which is covered with endothelium, a soft middle shell (intima media), represented by loose connective tissue, and an outer shell - adventitia. Normally, there are no atherosclerotic plaques on the surface of the arteries, but atherosclerosis can occur as a result of vascular diseases, especially in older people.

The blood supply to the iris is carried out by the arteries of the pupillary vein of the ophthalmic artery and the anterior ciliary artery, which branches into the choroidal artery and angular artery. The posterior ciliary artery also participates in the blood supply to the iris through anastomoses with the choroidal artery.

In general, the arteries of the iris perform two main functions - providing blood supply and nutrition to the iris tissue and maintaining its shape and color. Poor circulation in the iris artery system can lead to various ophthalmic diseases, such as iridocyclitis (inflammation of the iris), scleritis (inflammation of the front part of the eye) and iris ulcer (split of iris tissue).

Prevention of diseases of the iris arteries includes prevention of CVD, weight control and increased physical activity, changing diet, giving up bad habits and regular examination of the condition of the arteries by an ophthalmologist.

Iris arteries are blood vessels that supply blood to the iris of the eye. They are one of the important elements in the visual system, as they provide nutrition to all tissues of the iris.

The iris arteries run from the main artery of the brain to the iris, where they branch and supply arterial blood to all tissues of the iris. The main source of blood supply to the iris is the branches of the internal carotid artery, which provide blood circulation in this area of ​​the eye. It is important to understand that the health of the iris is directly related to the condition of the arteries of the iris and the overall blood circulation in the body. Any