What is BRVO (Branch Retinal Vein Occlusion) ?? Definition: Branch Retinal Vein Occlusion (BRVO) is a blockage of one of the smaller branches of the central retinal vein, which drains blood from the retina — the light-sensitive layer at the back of the eye. This blockage causes blood and fluid to leak into the retinal tissue, leading to swelling (edema), hemorrhages, and vision loss in the affected area. ------ 🔬 Pathophysiology: The retina’s arteries and veins share a common sheath at arteriov