What is non-arteritic anterior Ischaemic optic neuropathy?
Non-arteritic anterior ischemic optic neuropathy (NAION) refers to loss of blood flow to the optic nerve (which is the cable that connects the eye to the brain). This condition typically causes sudden vision loss in one eye, without any pain.
What is the treatment of choice for non-arteritic anterior ischemic optic neuropathy NAION )?
One recent large, nonrandomized controlled study suggested that oral steroids might be helpful for acute NAION. Others recently proposed interventions are intravitreal injections of steroids or anti-vascular endothelial growth factor (anti-VEGF) agents.
What is the difference between NAION and Aion?
AAION causes a pallid edema that ultimately resolves leaving significant excavation and atrophy of the disc whereas NAION typically exhibits normal or hyperemic edema that resolves leaving relatively preserved disc substance.
What is Arteritic Aion?
Arteritic AION (A-AION) is a dangerous condition caused by inflammation of arteries supplying blood to the optic nerve. The inflammation is due to a condition known as giant cell arteritis (GCA) or temporal arteritis, which causes inflammation of medium- and large-sized arteries.
How common is non arteritic ischemic optic neuropathy?
This leads to axonal edema and a compartment syndrome in an already crowded optic disc causing vision loss. Annually, there are ~6,000 new cases in the United States. Significant research on pathophysiology, prevention, and treatment has been performed and will be discussed in this review, but remains limited.
How is ischemic optic neuropathy treated?
There is no effective treatment for nonarteritic ischemic optic neuropathy. However, about 40% of people with nonarteritic ischemic optic neuropathy spontaneously recover some useful vision. In this condition, repeat episodes in the same eye are extremely rare.
Is AION a stroke?
Anterior ischemic optic neuropathy (AION) is commonly referred to as a stroke of the optic nerve. There are two types of AION: arteritic (AAION) and non-arteritic (NAION).
Does ischemic optic neuropathy get worse?
What is the long-term impact of Ischemic Optic Neuropathy on my vision? NAION- In some cases the vision can get worse over the first few weeks. Vision in the affected eye will typically stabilize within two months. Unfortunately in most cases some vision loss is permanent.
How common is non-arteritic ischemic optic neuropathy?
Is NAION an emergency?
Non-arteritic anterior ischemic optic neuropathy (NAION) is a potentially debilitating condition that occurs from a lack of sufficient blood flow to the optic nerve. If you have sudden vision loss, contact your doctor immediately.