This podcast asks what vision means to those who describe theatre for blind and partially-sighted audiences. Harsha Balasubramanian shares some of the findings from her undergraduate dissertation, and argues that these audio describers' understandings of vision are revealed through their practices. These shape the experiences of sight-impaired theatre-goers.With editing by Christina Woolner and voice acting from Rebecca Vaa, Francesca Firth, and Sian Lazar.I am hugely indebted to everyone who has helped with this podcast: all its participants and my friends and former teachers from university.