CENTRAL RETINAL VEIN (blue)
This vessel takes blood away from the retina
This vessel is blocked in central retinal vein occlusion
CENTRAL RETINAL ARTERY (red)
This vessel feeds oxygenated blood to the retina.
It can become blocked by an embolus (debris carried in the blood stream).
This information site has been provided by varied UK and US eye doctors for patients with eye problems.
Once your eye doctor has made a diagnosis or recommended an investigation or treatment, then you will be able to find further explanation on this site.
It is not a self diagnosis centre. It should not be relied upon without taking professional advice.