Figure 1. Branch retinal vein occlusion: hemorrhages and exudates in the area drained by the blocked vein. Image: Yong KC, et al. BMC Ophthalmol 2011;11:24, via Wikimedia Commons, CC BY 2.0. Source
What is it?
A retinal vein occlusion is a blockage in one of the veins that drain blood from the retina, the light-sensing layer at the back of the eye. Blood and fluid back up and leak, which can cause swelling in the center of vision and blurry or distorted sight. It is linked to high blood pressure, diabetes, high cholesterol and glaucoma, and about 1 in 130 adults has had one.
What do I do about it?
If the swelling affects your vision, the main treatment is a series of injections of medicine into the eye that dry the swelling. Most people need them regularly at first, then less often as the eye settles. If abnormal new blood vessels grow, I use laser to stop them. Some blockages don’t affect the center and only need watching. Controlling blood pressure, blood sugar and cholesterol with your primary care doctor protects both eyes.
When should I call?
Call my office the same day at 408-540-3559 if you notice:
- Vision getting blurrier or more distorted
- Eye pain or redness
- A sudden increase in floaters or darker vision
- Any change in the other eye
This page is for general education and does not replace an exam. Call Cai Retina at 408-540-3559 with questions.