Anterior Ischemic Optic Neuropathy
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It is much more common than posterior ischemic optic neuropathy (PION).
The optic nerve is made up of millions of tiny nerve fibers. This nerve transmits messages to the brain from the eye. For vision to occur, the optic nerve, must be healthy. There are many blood vessels that nourish the optic nerve. When the supply of oxygen and nutrients is blocked or insufficient (ischemia), the nerve fibers are affected and vision is diminished. Treatment for AION is different for arteritic AION than it is for non-arteritic.
Arteritic Anterior Ischemic Optic NeuropathyArteritic AION is caused by temporal arteritis or giant cell arteritis. This disease usually affects those 55 and older.It is a more serious condition than the non-arteritic form and can affect both eyes. Giant Cell Arteritis affects other organs in the body besides the eyes and the patient will have other symptoms beside the vision loss. Non-Arteritic Anterior Ischemic Neuropathy
Nonarteritic Anterior Ishemic Optic Neuropathy(NAAION) is caused by a lack of circulation or blood supply to the nerve fibers of the optic nerve.The cause of this eye condition is not known, but there are conditions such as diabetis and high cholesterold that place a person at higher risk. Symptoms include a sudden loss of one's field of vision, such as the lower or upper half of vision. There is no pain involved. Usually the symptoms are experienced after sleeping, with the speculation of a drop in blood pressure that caused the lack of blood flow to the optic nerve. Some people see an improvement in their vision over the next six months. Anyone who experiences a sudden loss of vision needs to contact their ophthalmologist immediately. If doctors suspect anterior ischemic optic neuropathy they will perform tests to rule out arteritic ischemic optic neuropathy which has a much different treatment than the non-arteritic form. To learn more about treatment for NAAION click here: Treatment for nonarteritic antior ischemic neuropathy NAAION Clinical TrialsCurrently there are several research studies looking at treatment for NAAION and evaluating the effect of Vision Restoration Therapy, VRT, on the visual function of patients. Non-arteritic Ishcemic Optic Neuropathy Clinical TrialsGo from Anterior Ischemic Optic Neuropathy to Macular Degeneration Would you like to be updated on: 
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