This text presents the thoughts of scientists and artists working on many aspects of visual perception, ranging from the physiology of the brain, development of sight in infants and the significance of faces, to the physics of images and the mathematics of impossible objects. There are essays on perspective, especially of Vermeer's use of the Camera Obscura, alongside an examination of the art of the forger, portraits of artists and scientists, and a personal statement by the late sculptress, Dame Elisabeth Frink. The book includes colour plates by Hockney, Magritte, Vermeer and others and should appeal to psychologists, vision scientists and all those interested in the effect of the visual arts on the eye and brain.