Optic neuritis is inflammation of the optic nerve. It may cause sudden, reduced vision in the affected eye.
Causes, incidence, and risk factors
The exact cause of optic neuritis is unknown.
The optic nerve carries visual informations from your eye to the brain. Sudden swelling of this nerve can damage the insulation (myelin sheath) surrounding each nerve fiber. This can result in permanent visual loss.
Conditions that have been linked with optic neuritis include:
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