Optic Neuritis

Optic neuritis affects the optic nerve, the cable that carries visual signals from the eye to the brain. Current understanding describes an immune-mediated attack on the nerve's myelin coating, which disrupts the transmission of visual signals and can, over time, contribute to nerve fiber damage as well. It is closely linked to multiple sclerosis, and research also describes specific antibody-defined forms, including cases tied to aquaporin-4 antibodies (associated with neuromyelitis optica spectrum disorder) and cases tied to MOG antibodies, alongside a larger group in which neither antibody is found.

Optic neuritis is described as the most common optic nerve disorder affecting young adults, with an estimated incidence of around 5 cases per 100,000 people per year in central Europe, and it is markedly more common in women. Close to half of people with multiple sclerosis develop optic neuritis at some point, and for some it is the first sign of the disease. Many people recover a meaningful amount of vision over weeks to months.

Common signs

Sudden blurred or dimmed vision in one eye, pain that worsens with eye movement, and washed-out or faded color vision. Many people recover much of their vision over weeks to months.

This is a plain-language summary for orientation, not a diagnosis. Mechanisms are described as current understanding, not settled fact. Work with your own clinician for your care.