Arteritic Anterior Ischemic Optic Neuropathy (AAION) is an acute, often painful optic neuropathy that occurs predominantly in elderly patients over age 50 but with increasing incidence each decade thereafter and can cause permanent loss of vision.

AION has two subtypes: arteritic anterior ischemic neuropathy (AAION) and nonarteritic anterior ischemic neuropathy (NAION). Arteritic conditions involve arterial inflammation (arteritis). These conditions usually happen with types of vasculitis (blood vessel inflammation).

Nonarteritic anterior ischemic optic neuropathy is an isolated white-matter stroke of the optic nerve (ON). NAION is the most common cause of sudden optic nerve-related vision loss, affecting more than 10,000 Americans every year, often bilaterally.

Ischemic optic neuropathies (IONs) consist primarily of two types: anterior ischemic optic neuropathy (AION) and posterior ischemic optic neuropathy (PION). AION comprises arteritic AION (A-AION: due to giant cell arteritis) and non-arteritic AION (NA-AION: due to other causes).

Arteritic anterior ischemic optic neuropathy (arteritic AION, A-AION or AAION) is vision loss that occurs in giant cell arteritis (also known as temporal arteritis). Temporal arteritis is an inflammatory disease of medium-sized blood vessels that happens especially with advancing age.

2024年12月13日 · Anterior ischemic optic neuropathy (AION) is a sudden, painless loss of vision resulting from interrupted blood flow from the posterior ciliary arteries and/or ophthalmic artery to the optic nerve head [2]. Primarily affecting adults over the age of 50, AION can significantly impair visual function.

Anterior ischemic optic neuropathy (AION) refers to ischemia of the optic nerve head, whereas posterior ischemic optic neuropathy (PION) indicates ischemia of the posterior optic nerve. IONs are primarily classified as arteritic ION and non-arteritic ION.

Ischemic optic neuropathy is infarction of the optic disk. It can be arteritic or nonarteritic. The only constant symptom is painless acute vision loss. Diagnosis is clinical. Treatment for the nonarteritic variety is ineffective. Treatment for the arteritic variety does not restore vision but can help protect the unaffected eye.

Arteritic anterior ischemic optic neuropathy is a true neuroophthalmic emergency and often a devastating condition. The loss of vision is very severe, often at perception of hand motions or worse and, if not treated immediately, this loss often progresses to become bilateral.

2015年12月9日 · Anterior ischemic optic neuropathy (AION) is the most common cause of acute optic neuropathy in older age groups. It may be nonarteritic (NAION) or arteritic (AAION), the latter being associated...