Do lots of people get optic neuritis, or is it unusual?

Pretty uncommon. Optic neuritis is an inflammation of the optic nerve which usually temporarily causes marked decrease in vision and pain on eye motion. Most recover, and are isolated issues. With recurrence, the liklihood of multiple sclerosis as an underlying cause is quite probable. You should see a neuro-ophthalmologist for this condition.

Related Questions

Do a lot of people get optic neuritis?

Uncommon. Optic neuritis (also called optic neuropathy) is due to inflammation of the main visual nerve behind the eye. Many cases are isolated and only occur once. A lot are associated with multiple sclerosis and may be the first happening in that condition. You should see your ophthalmologist or neuro-ophthalmologist for diagnosis and treatment. Read more...