Retinal vein occlusion is also called the eye stroke is blockage of one of the veins which are returning blood from your retina back to the heart. Retina which is the part of the eye is involved in focusing and converting electric signals that are sent to brains. A retinal vein occlusion is a blockage of the blood vessels that feed the retina and this can cause sudden and serious vision problems. Actually, the blockage of a blood clot or fluid buildup in your retinal veins impairs retina’s ability to filter light and your ability to see things. The rigorousness of the vision loss depends on which vein is infertile.
There are two types of retinal veins. one of them is central vein and other is branch veins. Likewise, there is two type of retinal vein occlusion also. one of it is central retinal vein occlusion and the second one is branch retinal vein occlusion.
Symptoms of Retinal Vein Occlusion
The primary symptom of retinal vein occlusion is blurring or loss of the vision which is generally sudden inception or only happens in one eye. If it is not treated the blurring or loss of vision usually gets worst in hours or days. Sometimes it so happens that a person sees dark spots or floaters which are tiny clumps of cells or material floating in your eye. Also in severe cases, a blocked vein will build up the pressure and causes pain in your eye. It’s important to see your doctor right away if you have any of these symptoms because a retinal vein occlusion can lead to other health problems.
Causes of Retinal Vein Occlusion
Retinal vein occlusion occurs because the arteries get hard and cause a clot. Such disease includes:
- atherosclerosis which is a hardening of the arteries
- glaucoma, in which the optic nerve damage which is caused by the increased pressure
- macular edema, where there is leakage of fluid into the macula
- high blood pressure
- high cholesterol
- disorder of blood which affects clotting
- age above 60
- people who are indulged in smoking
Diagnosing Retinal Vein Occlusion
This disease is diagnosed with a complete eye exam, which includes vision and pressure check and examining the surfaces and vessels of your eye. other tests that are used for diagnosis of the retinal vein occlusion include:
- Optical coherence tomography, in this high-definition images of the retina, is taken.
- Ophthalmoscopy in which your retina is examined with the ophthalmoscope
- fluorescein angiography is done in which a dye is injected into the arm of the patients which travels to retinal veins to be photographed for blockages.
- blood test for diabetes, high cholesterol, and blood clotting disorder