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(A) Plasma levels of cytokines (IL-8, IL-6, TNF- α) during acute non-arteritic ischaemic optic neuropathy (NAION). Note the significant elevation of IL-8 in the patient group. (B) Plasma levels of cytokines 3–12 months following NAION event. No differences in plasma levels of cytokines IL-8, IL-6, TNF- α between patients and control groups. Note that IL-8 levels return to normal range.
