Reality TV star Jack Osbourne, son of rocker Ozzy Osbourne, just announced that he has multiple sclerosis, an autoimmune disorder that affects the nervous system. Just 26-years-old, the younger Osbourne said his first symptom was vision loss.

Dr. Robert Shin, neuro-ophthalmologist at the University of Maryland Medical Center, will discuss the connection between vision and MS, as well as other symptoms. Plus, find out the latest treatment options for MS, a condition affecting about 400,000 people in the United States.