If you experience sudden vision loss, it is important that you seek immediate medical attention. Your ophthalmologist (Eye M.D.) will conduct a detailed eye examination to determine if your symptoms are related to ischemic optic neuropathy, and if so, what form of ION is present. Your Eye M.D. will check your visual acuity and measure your eye pressure, as well as use dilating eye drops to conduct a dilated eye examination to look for signs of damage to the optic nerve.
If your Eye M.D. suspects arteritic AION — the more dangerous form of AION — he or she may use a diagnostic test called fluorescein angiography, in which a dye is injected and a series of rapid photographs are taken, to help confirm the blockage of blood flow to the optic nerve.
Your Eye M.D. may also order additional tests to rule out giant cell arteritis (GCA), which is often associated with arteritic AOIN, including blood work and biopsies of arteries in the temple area of the head.
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