What is the history of optic neuritis?

Short term for most. I am going to assume you mean its normal clinical course, not how it was discovered. On is an inflammation of the nerve that causes a rapid drop in vision and color discrimination over a few days with vision recovery in 2-3 weeks for most. Repeat episodes (as in ms) can cause incremental on damage and vision reduction. Iv or oral steroids are sometimes used to treat on.