People marvel over blind musicians such as Ray Charles and Stevie Wonder, but then their music is so fine you forget they're blind. What, then, of artists nearing the end of their sight? "Blindsight: A New Perspective on Seeing" dispenses with any need of asking that question -- in theory. Instead, it presents works by four painters who started their careers with full vision, only to have it deteriorate almost completely. The result is an exhibit surrounded by questions of whether artistic ideas and visions are more grounded in the mind or the outside world. Salt Lake City native Vojko Rizvanovic adds his paintings to those of artists John Bramblitt of Denton, Texas, George Mendoza of Las Cruces, N.M., and Eric Peterson of Kemah, Texas. Exhibition held in the Street Gallery space.