Blocking of the retinal vein which reduces the vision is known as Retinal Vein Occlusion. This results in the accumulation of blood (retinal hemorrhages) and fluid (macular edema) in the retina and leads to a drop in the visual acuity (clarity of vision).
There are two types of Retinal Vein Occlusion:
A blockage forms in the vein, usually due to a blood clot, and obstructs the blood flow. The exact cause is unknown, but several conditions make the condition more likely. These include:
Retinal vein occlusion sometimes may not have any symptoms. However, some symptoms to observe are:
Retinal Vein Occlusion is diagnosed clinically with a dilated eye examination. Additional imaging such as fluorescein angiography and ocular coherence tomography (OCT) may be needed to confirm the diagnosis and monitor the progression of the disease.
Treatment of Retinal Vein Occlusion includes: