<unk>  (AAION or<unk>  AION) is the cause of vision loss that occurs in temporal<unk>  (aka giant-cell<unk> . Temporal<unk>  is an inflammatory disease of medium-sized blood vessels that happens especially with advancing age. AAION occurs in about 15-20 percent of patients with temporal<unk> . Damage to the blood vessels supplying the optic nerves leads to insufficient blood supply (ischemia) to the nerve and subsequent optic nerve fiber death. Most cases of AAION result in nearly complete vision loss first to one eye. If the temporal<unk>  is left untreated, the fellow eye will likely suffer vision loss as well within 1–2 weeks.<unk>  AION falls under the general category of<unk>  ischemic optic<unk> , which also includes non-arteritic AION. AION is considered an eye emergency, immediate treatment is essential to rescue remaining vision. An exhaustive review article published in March 2009 described the latest information on<unk>  and non-arteritic ischemic optic<unk> , both<unk>  (A-AION and NA-AION) and posterior (A-PION, NA-PION, and surgical).
Arteritic anterior ischemic optic neuropathy
Posterior ischemic optic neuropathy
Autoimmune optic neuropathy
Chronic relapsing inflammatory optic neuropathy
Toxic and nutritional optic neuropathy
Ischemic optic neuropathy
Retinal vasculitis
Anterior ischemic optic neuropathy