Iridology

n. study of the iris of the eye to detect bodily disorders and diseases; technique in alternative medicine by which different bodily disorders can be diagnosed by examining the structure of the iris of the eye

Iridology (also known as iridodiagnosis) is an alternative medicine technique whose proponents believe that patterns, colors, and other characteristics of the iris can be examined to determine information about a patient's systemic health. Practitioners match their observations to iris charts which divide the iris into zones which they correspond to specific parts of the human body. Iridologists see the eyes as "windows" into the body's state of health.
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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 (1822-1911), 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.