Book excerpt: Disease Signs in the Iris is intended for those who already have knowledge of the basic principles of irisdiagnosis. Part 1 is a translation from the German of the original work on iris interpretation by Theodor Kriege: Krankheitszeichen in der Iris. The disease signs are considered and explained as shown in original iris photographs. With few exceptions the conditions depicted have been confirmed by special methods of diagnosis, such as radiographic and blood investigations, as well as by the findings of surgical operations. The monochrome photographs especially highlight the structural changes and contrast values. The original text has been translated by A.W. Priest, and in Part 2 he correlates the iris findings with appropriate herbal and biochemical medication.