Non‐Arteritic Anterior Ischemic Optic Neuropathy Following COVID‐19 Vaccination

People are advised to receive a vaccine booster as the Delta and Omicron variants of severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2) emerge, but various adverse ocular reac-tions after vaccination have been reported. NAION following COVID‐19 vaccination appears ex-tremely rarely. Here, we report a case of a 61‐year‐old female with sudden painless blurred vision developing NAION after receiving ChAdOx1 nCoV‐19 (AstraZeneca) vaccination and provide an in‐depth explanation of the possible mechanisms regarding the hypercoagulable state after vaccina-tion. Our report adds to the literature on potential adverse ocular effects after COVID‐19 vaccina-tion, and we as ophthalmologists recommend that clinicians should increase awareness of this possible ocular complication when evaluating patients with sudden visual disturbance with a recent history of vaccination.