The iris of your eye is a personal and unique identifier that expresses much more about us than we can imagine. Through detailed observation of the irises' stroma, pigments and capillaries, you can determine a person's constitutional strengths and weaknesses and gain insight into their genetic predisposition to certain illnesses as well as preventive and treatment options that would be most effective. By reading the iris, practitioners of natural medicine can interpret the signs that reveal a client's lifestyle choices and use this knowledge to make enlightened decisions regarding the client's health plan and how to help them realise their full potential. In this full-colour guide, Gustau Pau, an iridologist with more than 35 years of experience, details the chromatic scale and signs expressed in the eyes and how to use them to identify organs and their function, as well as susceptibility to specific ailments. He explores the history and development of iridology from Hildegard von Bingen's work on healing to 18th-century European scientists, including Ignaz von Peczely, the father of modern iridology. He reveals recent iridology developments on identifying genetically inherited physical traits, explaining how individuals can use this insight to make nutritional and lifestyle choices that will offset inherited weaknesses and bolster strengths. Focusing on the digestive system, he shows how the pupillary zone can reveal digestive function and demonstrates how diet is responsible for causing many diseases. The author, also, explores miasmas in the eyes, includes methods for reading energy patterns in pupil tone and offers the scientific explanation for the old contention that the “eyes are the windows of the soul.” Illustrating the fundamental signs that iridologists use for reference, Pau provides sample iridographies and real case studies with photos and diagrams. Explaining how scientific research on the eye has not yet caught up with the innovations of iridology, he shows how the eyes reveal both our internal state and future health and have a much broader role in the body that we are only now just discovering.