The central retinal vein (retinal vein) could be a short vein that runs through the second cranial nerve, leaves the second cranial nerve ten metric linear unit from the eyeball and drains blood from the capillaries of the retina into either superior ophthalmic vein or into the sinus cavernosus directly.
The harm happens once a blocked vein keeps blood from exhausting from the tissue layer. That raises pressure within your eye, which may cause trauma, swelling, and fluid leaks. Retinal vein occlusions will damage your eye in minutes.
Nerve cells would like a continuing offer of blood to deliver gas and nutrients. Blood vessels give this offer. during a stroke, alittle grume blocks the flow of blood through one in all the arteries within the brain, and also the space that's not obtaining blood becomes broken.This same kind of harm will happen anyplace within the body. once a retinal vein is blocked, it cannot drain blood from the tissue layer. This results in hemorrhages (bleeding) and outflow of fluid from the blocked blood vessels.