What is optic neuritis in multiple sclerosis (MS)?

Updated: Feb 21, 2019
  • Author: Fiona Costello, MD, FRCP; Chief Editor: Hampton Roy, Sr, MD  more...
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Optic neuritis is an inflammatory injury of the optic nerve that represents the best characterized CIS associated with MS. [10] In fact, approximately 20% of patients with MS present with optic neuritis as the first clinical disease manifestation. [10] The annual incidence of optic neuritis is 1-5 per 100,000 per year. [11]

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