Blood–ocular barrier

The blood–ocular barrier is a barrier created by endothelium of capillaries of the retina and iris, ciliary epithelium and retinal pigment epithelium.

[1] It is a physical barrier between the local blood vessels and most parts of the eye itself, and stops many substances including drugs from traveling across it.

[2] Inflammation can break down this barrier allowing drugs and large molecules to penetrate into the eye.

[3] As the inflammation subsides, this barrier usually returns.

It consists of the following components: This cardiovascular system article is a stub.