Central Retinal Vein Occlusion (CRVO) is a condition in which the main blood vessel of the retina, responsible for draining the deoxygenated blood out of the eye, gets blocked. The obstruction of this vein results in blood and fluid accumulation. Eventually, the blood and fluids in the retina impact the vision.

This fact sheet is part of our Ophthalmology and Optometry Information Guide series, developed to help people understand eye conditions and their impact on navigating the built environment.