Book excerpt: Irisdiagnosis is the Science of diagnosing illness from the marks and colour changes in the iris of the human eye, developed from the original observations and research of Ignaz von Peczley, a Hungarian, who published his findings in 1880. Much research has followed and this method of diagnosis is now applied by homeopathic and naturopathic practitioners in both Europe and America. In Fundamental Basics of Irisdiagnosis Theodor Kriege shows you how to practise this for yourself, guiding you though the essentials of the process and teaching you how to diagnose accurately.