A look into…Retinal Vein Occlusion


Retinal Vein Occlusion (RVO) is a disease in which type and location of occlusion, aetiology and visual complications are all linked to outcomes and treatment requirements. Therefore, knowing the patient population for this disease and having it segmented in detail, could be very useful.

Firstly patients are categorised into either Branched Retinal Vein Occlusion (BRVO) or Central Retinal Vein Occlusion (CRVO). Typically in a 3:1 ratio respectively. Fortunately the more common BRVO has a better outcome.

The patient sub-populations, defined by severity and associated co-morbid conditions, differ greatly between these two categories. Co-morbid conditions range from cardiovascular diseases to diabetes mellitus, hypertension and glaucoma. Some BRVO patients, and all CRVO patients, will suffer from macular oedema. The length of time a patient has macular oedema is linked to the increased likelihood of the patient losing their sight and therefore this too has been included in our offering.

Retinal Vein Occlusion can occur at any age but majority of cases are in patients over the ages of 55; This represents 80% in the UK, and it is the second most common type of retinal vascular disorder after diabetic retinal disease.

Quick Fact

Did you know ... Over 30% of CRVO cases are ischemic? This leads to areas of the retinal being killed off causing the patient to lose their sight.