Branch Retinal Vein Occlusion Occurring After Second Dose of Sinopharm COVID-19 Vaccine: A Case Report

An old-aged woman was evaluated with branch retinal vein occlusion (BRVO) vision reduction in his left eye three weeks after the Sinopharm coronavirus disease 2019 (COVID-19) vaccination. Her best-corrected visual acuity (BCVA) was 1m counting finger in the left eye and 10/10 in the right eye. Initial retinal findings were superior retinal hemorrhage with prominent retinal vein dilation and tortuosity in the left eye. Fluorescein angiography (FA) and optical coherence tomography (OCT) confirmed a BRVO diagnosis. Blood reports showed no abnormalities. Antithrombotic treatment of 80 mg/d low-dose entrocoated ASA was administered. In addition, an intravitreal Aflibercept (Eylea) injection, monthly and ongoing, was prescripted, which led to a decrease in macular edema, retinal hemorrhage, and height of serous retinal detachment. Moreover, the BCVA improved to 2/10 after a three-week follow-up.