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Retinal Vein and Artery Occlusions
Retinal Vein Occlusions (RVO) and Retinal Artery Occlusions (RAO) are vascular retinal disorders and are among the most common causes of blindness after diabetic retinopathy. RVO is classified according to where the obstruction is located. A Central Retinal Vein Occlusion (CRVO) is defined as an obstruction of the retinal vein at the optic nerve, while a Branch Retinal Vein Occlusion (BRVO) is defined as an obstruction at the branch of the retinal vein. Retinal Artery Occlusions (RAO) is usually accompanied by a painless loss of vision in one eye. Ocular stroke is normally caused by embolism of the retinal artery, although they may travel to distant branches of the retinal artery. Immediate intervention may improve the changes of visual recovery.