If you thought contact lenses were just for correcting eyesight, think again. Sian Harris delves into some of the ideas to wire them up to the latest technology. YOU CAN TELL a lot about a person from the eyes. In poetry and novels, lovers will gaze into each others' eyes and see into the depths of their loved ones' souls. In contrast, the eyes of fictional villains often reveal them to be cruel and cold.
展开▼