Arteritic Anterior Ischemic Optic Neuropathy (AAION) is a condition that occurs when blood flow to the optic nerve is reduced due to inflammation of the arteries, often associated with giant cell arteritis. This lack of blood supply can lead to sudden vision loss in one eye, typically affecting older adults. Symptoms of AAION may include blurred vision, a darkened area in the visual field, or complete vision loss. Early diagnosis and treatment are crucial to prevent further vision loss and manage underlying conditions, such as temporal arteritis, which can cause serious complications if left untreated.