Branch retinal vein occlusion (BRVO) occurs when one of the small veins in the retina becomes blocked. This blockage can lead to fluid leakage and bleeding in the retina, causing vision problems. Common symptoms include blurred or distorted vision in the affected eye. BRVO is often associated with underlying health issues such as hypertension, diabetes, or high cholesterol. Diagnosis typically involves a comprehensive eye exam and imaging tests. Treatment options may include laser therapy or injections to reduce swelling and improve vision, depending on the severity of the condition.