Ischemic optic neuropathy
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Ischemic optic neuropathy (ION) is the loss of structure and function of a portion of the optic nerve due to obstruction of blood flow to the nerve (i.e. ischemia). ION is typically classified as either anterior ischemic optic neuropathy or posterior ischemic optic neuropathy according to the part of the optic nerve that is affected.
References
Dictionary of Eye Terminology, Triad Publishing Company, 1990. Template:Disease-stub Template:WikiDoc Sources