Mass. company will try to treat progressive blindness
                                
                                
                                    (Newser) -
                                    The FDA has approved the second stem-cell trial on humans: Advanced Cell Technology will test the effects of stem-cell treatments on 12 patients with Stargardt’s macular dystrophy, a disease that causes progressive blindness,  Reuters  reports. The currently untreatable disease causes degeneration of eye tissue beginning as early as age...