<unk>  <unk>  is a medical condition involving loss of vision caused by damage to the optic nerve as a result of insufficient blood supply (ischemia). This form of ischemic optic neuropathy is generally categorized as two types: arteritic<unk>  (or AAION), in which the loss of vision is the result of an inflammatory disease of arteries in the head called temporal arteritis, and non-arteritic<unk>  (abbreviated as NAION, NAAION, or sometimes simply as<unk> , which is due to non-inflammatory disease of small blood vessels.
Anterior ischemic optic neuropathy
Posterior ischemic optic neuropathy
Ischemic optic neuropathy
Optic neuritis
Arteritic anterior ischemic optic neuropathy
Ocular ischemic syndrome
Infiltrative ophthalmopathy
Optic neuropathy