Two brothers, Tod and Justin Purvis, who suffer from a degenerative eye disease, and are going blind. Circumnavigate the United States, seeing the great sights that make America beautiful. Limited sight, with unlimited Vision. Driving Blind, a feature length documentary. Two brothers, Tod and Justin Purvis faced with a rare genetic disease that causes blindness (Choroideremia) ...$5星给即将黑暗的世界