Optic neuritis is swelling of your optic nerve, the nerve that connects your eye to your brain. Symptoms include blurry or dim vision, colors appearing faded, pain in your eye socket and pain when you move your eyes. People who have had mumps, measles, flu or multiple sclerosis are more likely to get optic neuritis.

To diagnose optic neuritis, your ophthalmologist will check your optic nerve for signs of swelling. He or she may have you do tests that provide detailed images of your visual system.

Optic neuritis is usually treated with corticosteroid medicine, and vision often improves quite a bit. However, people who have MS or other conditions may not see as much improvement.

If you have any questions about your eyes or your vision, speak with your ophthalmologist. He or she is committed to protecting your sight.