This week’s blog on Retinal Vein Occlusion has been contributed by Dr Hassan Aziz, Consultant Vitreoretinal Surgeon.
Retinal Vein Occlusion occurs when a retinal vessel is occluded, blocking the drainage of the blood from the retina. 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).
Risk factors for Retinal Vein Occlusion include: hypertension, diabetes mellitus, cardiovascular disease, primary open angle glaucoma.
There are two types of Retinal Vein Occlusion:
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:
Retinal Vein Occlusions tend to have a relatively good prognosis if diagnosed and treated early. Delayed treatment may result in permanent retinal ischemia, neovascular glaucoma and tractional retinal detachment.