The main cause behind the optic nerve swollen is due to infection. Either your optic nerves can be damaged from any injury. Just consult with the specilaist eye surgeon, If you don't care for your eye. you can also loose your vision very soon.
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Optic Nerve Swelling is associated with infections, autoimmune disease, and injury to the optic nerve, and causes you vision problems. In most cases, normal vision returns without any special treatment. But for severe conditions, treatment with intravenous corticosteroids is recommended.