Patients treated include a Nevada grandmother with Parkinson's disease and an 11-year-old Alabama boy who has been blind since birth. Charlene Lustig's motor dysfunctions haven't responded to treatment, so Dr. Kim J. Burchiel implants electrodes in her brain in a procedure called deep brain stimulation. Young Josh McInnish has undergone unsuccessful corneal transplants; now Dr. Peter Zloty attaches an artificial cornea to a donated one and implants it into the boy's eye.