Our eyes are a barometer, signal lights for feelings held within. At times they are large and glistening, communicating delight, excitement and engagement. At others they seem almost to turn inwards, deadened and unresponsive. They can shed tears of happiness and weep tears of pain. They are the part of our bodies around which narrative most instinctively forms. What we are and will become often begins with the eyes; it is here that love first takes hold, that envy seeps in, that we put together the pieces of the jigsaw that forms the world around us. Organs of extreme sensitivity, they respond to surges of feeling or the physical effects of light and pressure, and broadcast that response.