Dr. Mark Fleckner - Opthamolgist | Long Island, New York | Conditions We Treat

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Conditions We Treat

Eye Diseases - Central Retinal Vein Occlusion (CRVO)

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What Is a Central Retinal Vein Occlusion?

Central Retinal Vein Occlusion (CRVO) is a disorder characterized by blockage of venous blood flow from the retina. The retina is the nerve tissue in the back of the eye. Like the film in a camera, the retina is sensitive to light. It transforms light energy to nerve stimuli, and "sends a picture" through the optic nerve to the brain. The retina receives oxygenated blood through the central retinal artery, which enters through the optic nerve and branches out to supply blood to the entire retina. The deoxygenated blood leaves the eye through a network of veins which join at a central retinal vein and exit through the optic nerve. A Central Retinal Vein occlusion is a blockage of this vein.

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