As an Iridologist, I get asked that question quite often. Or, "Iri-what?" Many people have never heard of Iridology.
It is the study of the iris; its color, structure and markings that seven generations of inherited traits made you who you are. A couple of dictionaries and some of the most notable Iridologists explain it this way:
Dorland's Medical Dictionary
Iridology is a diagnostic technique based on the premise that early pathologic changes elsewhere in the body are reflected in the iris before disease becomes clinically apparent; an analysis of a person's state of health may be made by visual examination of the iris, with the color, density, and position of deposited pigment helping to identify the pathological process and the organ involved.
Iridology, or iris analysis, was pioneered in the late nineteenth century by Ignatz Von Peczely, a Hungarian doctor. In this diagnostic technique, the pigmentation, texture, patterns and rings of the iris of the eye are closely examined to gain an indication of the overall constitution of the patient.
Iridology is based on the belief that different areas of the iris are linked to different organs of the body through out the nervous system, so that marking in any particular part of the iris can give information about the past and present health of the linked organ.
Dr. Bernard Jensen: Iridology is a science whereby the doctor or operator can tell from the markings or signs in the iris of the eye the reflex condition of the various organs of the body. The science of determining acute, sub-acute, chronic and destructive stages in the affected organs of the body through their corresponding areas in the iris.
This system of analysis makes apparent the need for application of all the healing arts, and the doctor who understands it must be so broad and rounded out in his understanding that he is able to use all forms of healing in order to better help is patient.
Through Iridology, patients can be warned in time for prevention of disease.
Dr. Ellen Tart Jensen: Iridology is the study of the color, pigmentations and structure of the iris or colored portion of the eye as they relate genetically through reflex response to the strengths and deficiencies of the body systems.
John Andrews: The iris is the most striking and visible aspect of our body. The structure itself is named after the ancient Greek goddess of the rainbow and messenger of the Gods-Iris.
Iris color was thought to be a simple trait...Eye color is an inherited trait influenced by more than one gene. In humans, three genes associated with eye color are currently known: brown, green, blue.