Ostensibly diagnostic system whose postulate is that every bodily organ corresponds to a location on the iris (the colored portion of the eye surrounding the pupil). According to iridology theory, the iris serves as a map of the body and gives warning signs of physical, mental, and spiritual problems. Proponents ascribe modern iridology to Hungarian physician Ignatz von Peczely (1826-1911), author of The Discovery in Natural History and Medical Science, a Guide to the Study and Diagnosis from the Eye (1881). Supposedly, von Peczely discovered the “iris-body” connection in his childhood, when he broke the leg of an owl and a black stripe spontaneously appeared on the owl’s iris. Probably the leading proponent of iridology in the United States is author and nutritionist J. Bernard Jensen, D.C., Ph.D. Also called eye analysis, iridiagnosis, irido-diagnosis, iris diagnosis.