Sanpaku means ‘three whites’, and is a Japanese term. People with Sanpaku eyes have an iris that is turned upwards so the white is clearly visible on three sides and in the Orient it is thought to show poor diet and health. Stress also affects the optic nerves and can pulls the muscles up, moving the iris with them towards the eye socket, so white space is revealed underneath. Among the famous with this have been Julius Caesar, Abraham Lincoln, John F. Kennedy, Adolf Hitler and Princess Diana and Cherie Blair Some therapists believe that a macrobiotic diet may be able to reduce the effect.