Walter Carvalho is the cinematographer of over 60 Brazilian movies, Central Station among them. João Jardim and Carvalho are both myopic which may explain their interest in blindness/sigh impairment. It's good to see Brazil bringing to the screen a more universal subject. The interviews show many different aspects of the matter through the eyes (or not) of people like Win Wenders, Oliver Sacks, José Saramago, João Ubaldo Ribeiro. José Saramago is the author of "Blindness", a book now turned movie. "Window of the soul" makes a reference to Leonardo da Vinci's quote "the eyes are the window of the soul, the mirror of the world". Beautiful and poetic movie.