The film, which won the Panorama Audience Award at the Berlin International Film Festival, sold to TAO Cinemathek (Germany), Phantom Films (Japan), Conquest Films (Brazil), and Quality Films (Mexico).
Rights also went to Svensk (Scandinavia), Spenzos (Greece), Cinemien (Benelux), and Pa-Dora (the former Yugoslavia).
Lucy Walker directed the film about six blind Tibetan teenagers who attempt to scale the north side of Mount Everest.
'We couldn't be more pleased with the sales this film is generating,' Robbie Little said. 'There definitely exists a strong demand for powerful, moving documentaries and Blindsight has proven to be one of the most well received documentaries around.'