The Science & Practice of Iridology by Bernard Jensen is a comprehensive guide to iridology, the study of the iris to assess an individual's health. Jensen, a pioneer in this field, explains how patterns, colors, and markings in the iris reflect the state of various organs and body systems, providing insights into a person’s overall health. The book serves as both an introduction for beginners and a detailed resource for experienced practitioners.

Jensen starts by outlining the historical background of iridology, tracing its roots back to ancient civilizations and its development as a modern diagnostic tool. He then explains the basic principles, emphasizing that the iris is a map of the body. Each section of the iris corresponds to a specific organ or system, and changes in the iris can indicate imbalances, toxicity, or susceptibility to disease.

The book includes detailed diagrams, photographs, and charts to help readers understand how to interpret the iris. Jensen provides practical guidance on identifying key features such as iris fibers, color variations, and structural anomalies. He also explores how these indicators can reveal inherited tendencies, stress levels, and nutritional deficiencies.

A significant portion of the book is dedicated to case studies, illustrating how iridology has been used to detect health issues and guide individuals toward better health. Jensen integrates iridology with holistic health practices, emphasizing detoxification, proper nutrition, and lifestyle adjustments as essential to healing and prevention.

Throughout, Jensen underscores the importance of using iridology as a complementary tool rather than a standalone diagnostic method. He advocates for its integration into broader healthcare systems to enhance understanding of the body’s interconnectedness.

This book remains a seminal resource for those interested in alternative medicine, offering both scientific insights and practical applications of iridology.