Introduction: Shadows of vision -- 1. At the blink of an eye : vision, ethics, and politics -- 2. Darkness and the animal in Graciliano Ramos's Memórias do cárcere (Memoirs of prison) -- 3. Twists of the blindfold in art, fiction, and film -- 4. The reason of vision : variations on subjectivity in José Saramago's Ensaio sobre a cegueira (Blindness)