Officials with U-P-M-C say the first trial of a wireless eyeball implant is underway. A woman from Ohio had the chip installed last week to act like an artificial retina. If effective, the treatment may be used to help people battling age-related macular degeneration, which causes 14-million people to lose their sight. Four more patients will take part in the trial in the coming months. It may be several years before the method gets broader approval to become an accepted treatment.