Retinal Vein Occlusions
Retinal Vein Occlusions occur when a vein in the retina is obstructed. Retinal vein occlusions can occur for many reasons most of which are medical such as hypertension. If no medical history can account for the occlusion, a thorough medical workup for a cause would be initiated.
There are two types of vein occlusions: branch retinal vein occlusion (BRVO) and central retinal vein occlusion (CRVO).
- BRVO occurs when a smaller branch leading from the central vein becomes obstructed.
- CRVO occurs when the whole central vein becomes blocked.