Optic Neuritis
Curious about optic neuritis? It's more common than you might think. Around 5 per 100,000 people in the U.S. are diagnosed each year with new cases of the eye condition, mostly women. If you want to know what optic neuritis is, how it’s treated and other related concerns, this glossary has the answers.
What Is Optic Neuritis?
Optic neuritis is the swelling or inflammation of the optic nerve, a bundle of nerve fibers at the back of the eye that transmits visual information from your eyes to your brain. Severe cases of this condition can lead to vision loss.
Causes
You could develop optic neuritis in several ways, with the most common cause being multiple sclerosis (MS), a condition that affects the central nervous system. Other explanations can include bacterial infections like cat-scratch fever, Lyme disease, syphilis or even viruses like herpes, measles and mumps.
Certain drugs and toxins can also be triggers. For example, ethambutol, a drug used for tuberculosis, and methanol, found in antifreeze and some solvents, have been linked to optic neuritis. Knowing what might lead to optic neuritis can be key in preventing and managing it effectively.
Symptoms
If you have optic neuritis, you’d likely experience some or all of these symptoms:
- Eye pain, especially when moving your eyes
- Vision loss in one eye, potentially worsening over hours or days
- Side vision loss
- Colors may appear less vivid
- Flashing lights, for some people
Though optic neuritis symptoms can be unsettling, this eye condition usually improves with time and, sometimes, treatment.
Diagnosis
Diagnosing optic neuritis starts with a thorough eye exam to assess your vision and optic nerve health. Your ophthalmologist might also recommend a magnetic resonance imaging (MRI) to look for underlying conditions like multiple sclerosis.
Keep in mind that most people experience some optic nerve damage after having optic neuritis, but here's the good news: that damage often doesn't lead to lasting symptoms. Also, most people regain normal vision within a few months, although some may notice a slight, lingering change in color perception.
Treatment Options
You don’t necessarily need treatment since optic neuritis often improves on its own in a few weeks. However, to reduce inflammation and speed up recovery, an eye doctor may administer corticosteroid treatment. If steroid therapy isn't effective and severe vision loss continues, some people resort to plasma exchange therapy to regain their normal vision.
If optic neuritis is linked to another condition, like multiple sclerosis, treating the underlying issue should be a priority. Consult your eye doctor to find the best treatment plan.
Frequently Asked Questions
Is optic neuritis contagious?
Is optic neuritis always painful?
Can children get optic neuritis?
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