Veins in your eye—known as retinal veins—are an important part of your eye's normal circulation. They move blood out of your eye toward your heart.
A retinal vein occlusion (or RVO) is the blockage of one of these veins. It occurs without warning. RVO can be a serious condition that in some cases can lead to vision loss in the affected eye.
There are 2 types of RVO:
- Branch RVO (or BRVO)
- Central RVO (or CRVO)
Watch the video below to understand what happens in your eye:














