For many people, the first inkling they have multiple sclerosis is visual.

In fact, for up to half of MS patients, a visual problem is the first symptom. And almost all MS patients will have some type of visual disturbance in their lifetimes.

Double vision is common because MS keeps the eyes from working together. Patients also may have trouble reading or watching television because the image shakes. One of the most common vision issues for people with MS is optic neuritis, which can cause loss of vision in one eye.

As the name multiple sclerosis implies, patients experience multiple events at multiple times. That’s called attack, relapse and exacerbation. Any individual system may get better within weeks or months, but then other symptoms develop.