What is a RVO ?
A RVO is a blockage of the major vein that drains blood from the retina.
Causes and Symptoms:
A RVO is usually caused by hardening of the arteries which compress the underlying vein. Hypertension, diabetes, high cholesterol and/or smoking contribute to hardening of the arteries. Glaucoma can also predispose to the development of a RVO. A RVO causes fairly sudden, painless, blurred vision usually in one eye.
There are two reasons people with a RVO may require treatment. The most common reason is swelling in the macula. Less common is the growth of abnormal blood vessels on the retina, optic nerve or iris that may cause bleeding within the eye or a dangerous increase in the pressure within the eye.Swelling within the macula is treated with injections of medications such as Lucentis, Avastin, Eylea or steroids into the eye. In some cases the option of a laser procedure to bypass the obstruction can be considered. Abnormal blood vessels growing within the eye are treated with extensive retinal laser.