South Dakota Rehabilitation Center for the Blind student, Brandi Vissers, 20, of Sioux Falls, who has retinitis pigmentosa--a degenerative eye disease that causes severe vision impairment and often blindness--types with a Perkins Smart Brailer during a communications class on Wednesday, April 9, 2014, at the Rehabilition Center in Sioux Falls. One of the goals of the rehabilitation center is to give visually impaired people the skills to work, Dawn Backer, rehabilitation manager, said. (Joe Ahlquist / Argus Leader)