as an electrician 49-year-old steven o'malley depend osgood vision, but seven years -- depends on goodion, but seven years ago things suddenly began to go dark. >> i was scared to death. i went to work at 6:00 in the evening and was completely blind in one eye six hours later. >> reporter: the cleveland father of two was diagnosed with multiple sclerosis. ms is a neurological disease affecting the brain and spinal cord. symptoms range from numbness and tingling to blindness and paralysis, usually getting worse over time leaving many patients greatly disabled. while there's no cure for ms, there are effective treatments. kate lodge gets monthly infusions requiring a two-hour hospital visit, but there are scary potential side effects including fatal brain infections. >> the symptoms of the brain infection can mirror the symptoms of ms. so you can't know and so you go into a panic mode. >> what we've needed in ms treatment is the ideal combination of very effective therapy, well tolerated and safe. >> and now that therapy may finally be here in an easy to take pill form. dr. robert fox is