Optic Neuritis and Multiple Sclerosis

Endothelin-1 (ET-1) — a molecule with potent blood vessel-narrowing (vasoconstrictive) properties — may be used as a biomarker of severity for optic neuritis in people with multiple sclerosis (MS), a small Italian study suggests. The molecule…

The percentage of Taiwanese who develop multiple sclerosis (MS) after an episode of clinically isolated syndrome (CIS) is lower than that reported for other ethnicities, and those who do progress are likely to have a milder disease…

A study of Iranian patients with early-onset multiple sclerosis (MS) found women to be in the majority, optic neuritis to be the most common first disease symptom, and relapsing-remitting MS the most frequent disease course. The epidemiology of early-onset MS…

Treating mice in a model of multiple sclerosis (MS) with laquinimod before the onset of symptoms eased inflammation so as to help preserve their vision — lessening damage to the optic nerve and retina, a study from Germany reports.

Exposure to epsilon toxin (ETX), which is mainly found in livestock, could be linked to the development of multiple sclerosis (MS), new research suggests. The study, “Evidence of Clostridium perfringens epsilon toxin associated with multiple…

According to the Multiple Sclerosis Society in the UK, optic neuritis is associated with MS. Although the two conditions can be connected, they’re not consequential: not everyone who develops optic neuritis will go on to develop multiple…

Editor’s note: Tamara Sellman continues her occasional series on the MS alphabet with this column referencing terms starting with the letter “O.” Symptoms of MS Optic neuritis This is a…

People with a demyelinating disease associated with antibodies against a myelin oligodendrocyte glycoprotein (MOG), most often develop episodes of optic neuritis (inflammation of the optic nerve) that can be treated with corticosteroids, according to data presented today at the 7th Joint…

Structural changes of the eye retina are a common feature among multiple sclerosis patients with a clinical history of optic neuritis, a Danish study finds. Loss of the myelin protective layer of optic nerve cells due to inflammation causes optic neuritis. About 20 percent of MS have it, and optic neuritis is a symptom of disease progression in about 40 percent of patients. In most cases, symptoms persist, leading to visual impairment or blindness, along with pain. Non-invasive optical coherence tomography can help evaluate neurodegeneration of optic nerve cells. This imaging technique allows a three-dimensional evaluation of internal eye structures, including the thickness of the retina nerve fiber layer. Previous studies have shown that MS patients may present progressive RNFL loss, but this can also be caused by optic neuritis. The use of OCT has been proposed to distinguish MS subtypes and evaluate disease activity. However, little clinical data is available to validate OCT's accuracy and potential as a diagnostic tool. To find out more, a Danish research team conducted a long-term evaluation of structural and functional visual outcomes in MS patients with and without a history of optic neuritis. Researchers observed that patients with a history of optic neuritis had significantly more RNFL thickness loss than those without optic neuritis. They linked reduced RNFL thickness with a 1.56 times higher risk of optic neuritis development. Nevertheless, the team did not find any association between optic neuritis and functional impairment of visual acuity or color vision. Use of high-resolution OCT devices coupled with up-do-date analysis software can improve the diagnostic efficacy of this imaging technique in MS patients, said researchers, who urged more studies to address the relevance of structural changes in MS.

I was watching my son’s baseball game in the early 1990s when suddenly, my left eye went blurry and blocked my vision. It was a startling incident that lasted about two hours, and then it was gone.