While the retina is supplied from one side by the choroid, there are also blood vessels directly on the back of the eye - the retina.

This network of vessels comes from the central artery (arteriole), which emerges directly from the optic nerve, and covers the entire retina. The more branched these vascular branches become, the smaller the diameter of the individual vessels becomes.

These particularly small vessels are the so-called capillaries - their diameter is so small that blood corpuscles deform when they flow through them. Because the main vessel of this branching network has no connection to other arteries, the blood vessels in the eye are particularly sensitive to metabolic disorders or high blood pressure.

For this reason, it is important to have regular check-ups with an ophthalmologist, for example, if you have high blood pressure or diabetes.