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inflammation of the retinal portion of the optic nerve.
Neuritis of the retinal fibers of the optic nerve causing disturbed vision, contracted field, enlarged blind spot, and fundus findings such as exudates, hemorrhages, and abnormal condition of the blood vessels. Treatment depends on the cause (e.g., brain tumor, meningitis, syphilis, nephritis, diabetes). See: optic neuritis
See also: neuritis