Hi. I'll be happy to help you with your question.
The most common type of vein occlusion in a person with hypertension is called a branch retinal vein occlusion. In the retina, veins (low pressure blood vessels) and arteries (high pressure vessels) share a common vascular sheath. With hypertension, arteriosclerosis or diabetes, the retinal arterioles become thicker with a narrower center. This stiffer artery can then press on its companion vein causing it to clot off, much like stepping on a garden hose stops the flow of water. When this occurs pressure backs up through the area drained by that vein and the retina swells and blood leaks out. If this blockage occurs in the center of your retina (the macula) vision can be greatly affected. If it does not involve the macula you central vision may be normal.
It is important to be followed closely by your ophthalmologist for this condition. She can watch for problems that may arise due to the vein occlusion such as new blood vessel growth (neovascularization), chronic macular edema or large areas of retinal ischemia. These can be treated with laser or injections.
Other then keeping your blood pressure under control and maintaining good general health there is nothing specific that you can do for your vein occlusion. I am not a large fan of vitamins and supplements beyond a healthy diet but, that being said, I believe they can't hurt when used as directed.
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