What causes retinal-vein occlusion (RVO)?

A retinal-vein occlusion (RVO) occurs when a vein in the eye's retina is blocked. There are two main types of retinal-vein occlusion: Central retinal-vein occlusion (CRVO), when the main vein of the eye (located at the optic nerve) becomes blocked; and branch retinal-vein occlusion (BRVO), when one of the smaller branches of vessels attached to the main vein becomes blocked.

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Eye and Vision

Eye and Vision

The leading cause of blindness is an eye disease such as cataracts, glaucoma or macular degeneration. Each can be slowed or treated through regular eye exams. On a daily basis, doctors recommend wearing sunglasses to guard against ...

damage from the suns ultraviolet rays and using protective goggles during sports and certain household projects to protect against injury.

Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.