The paper focuses on the history of origination and development of iridology. The basic stages of formation of iridology as a science in Ukraine are analyzed. Due emphasis is given to the role of iridology as an easy-to-learn method of rapid diagnosis of high informative value. Efficiency is shown of iridodiagnosis as exemplified in Chernobyl accident victims. Iridology is claimed to be a science of much promise in Ukraine.