What happens when cataracts rob an art critic of his sight? John Berger, whose classic book Ways of Seeing has been in print for fifty years, joins forces with Turkish illustrator Selcuk Demirel to reflect on his own experience of loss of vision. 'John Berger writes about what is important, not just interesting. In contemporary English letters he seems to me peerless; not since Lawrence has there been a writer who offers such attentiveness to the sensual world.' Susan Sontag.