WHAT IS BRANCH RETINAL VEIN OCCLUSION (BRVO)?
Branch retinal vein occlusion (BRVO) in when a branch of one of veins in the eye becomes blocked. This is in contrast to a central retinal vein occlusion (CRVO) where the entire main retinal vein is blocked. When the vein is blocked, blood and fluid can leak out into the retina. Sometimes this can cause the macula to swell which can affect the central vision. If untreated, the swelling get continue to get worse when can cause even further loss of vision.
Branch Retinal Vein Occlusion (BRVO) Symptoms
The most common symptom of branch retinal vein occlusion (BRVO) is vision loss or blurry vision in part or all of the eye. This can happen suddenly or become worse over several hours or days. It is usually painless. Some patient may experience floaters or straight lines becoming more wavy or distorted.
WHO IS AT RISK FOR BRANCH RETINAL VEIN OCCLUSION (BRVO)?
Risk factors for Branch Retinal Vein Occlusion (BRVO) include:
• Age over 50
• High blood pressure
• Hardening of the arteries (called arteriosclerosis)
• Patients with a history of blood clots
diagnosis of Branch Retinal Vein Occlusion (BRVO)
Diagnosis of Branch Retinal Vein Occlusion (BRVO) is made by examining with eye with a dilated exam. Additional testing such as fluorescein angiography (FA) and optical coherence tomography (OCT) may also be used to help determine the extent of bleeding.
treatment of Branch Retinal Vein Occlusion (BRVO)
There is no cure for branch retinal vein occlusion (BRVO). The blocked vein cannot be unblocked. However, there is treatment that can recover some and even all of the vision. One of the goals of treatment is also to prevent the vision from getting worse.
In some cases, branch retinal vein occlusions do not require treatment if there is minimal to no leakage of it the central vision is not affected.
However, when the central vision is affected treatment should be initiated to prevent further vision loss. Treatment options include a class of medications called anti-VEGF medications. Lasers and steroids may also play a role in treatment if anti-VEGF medications do not have the desired effect.