The iris, or the colored part of the eye, is used as a diagnostic tool in iridology. Imperfections in the iris are believed to indicate certain health problems. Although the practice of iridology has been used in natural medicine since it was first developed in Hungary in 1861, it has not yet been accepted by mainstream medicine as a valid form of diagnosis. Alternative medicine practices such as this should be used in conjunction with and not in place of conventional medical care.
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In "Principles of Iridology," Creighton University describes three main eye colors and their significance to iridologists. The blue eye, also referred to as the lymphatic eye, is believed to indicate increased risk of problems with the lymphatic system, including the kidneys and adrenals.
Mixed eye colors such as hazel and light brown with gold are called biliary eye colors. People with this eye color type are believed to have an increased risk of liver problems, digestive problems and allergies.
The last eye type, brown or hematogenic, is believed to be found in people who may be predisposed to blood disorders. Iridologists warn that eye color does not mean that patients have these disorders, but that they may have a predisposition to develop them.
Rings and Bands
The next defect signs listed in "Principles of Iridology" are rings, bands and radii, or line segments, within the iris. Depending on the shape, color and number of rings, iridologists may be able to detect existing health problems. According to Creighton University, a lipid ring, which is a white ring around the outside of the iris, generally indicates arteriosclerosis or other cardiovascular problems.
Lymphatic rings, or white clouds around the outside the iris, may indicate lymphatic congestion. Individuals with these rings may need more exercise. Radii Solaris are line segments that radiate out from the pupil. These may be a sign of parasites or other toxins in the system.
Spots and Other Defects
Other defects that iridologists seek to determine both hereditary and acquired health problems include dark spots, also known as liver spots, and lacunae, or empty pits or cavities within the iris. The Helenic Medical Association of Iridology gives several examples of how these defects correlate to certain diagnoses. For example, a lucana in the corresponding liver area of the iris can be seen in a patient with hepatitis B. A dark spot in the corresponding kidney area can be seen in patients with kidney hydronephrosis, which is a swelling of the kidneys sometimes caused by kidney stones.
Dr. David Pesek of the International Institute of Iridology further explains that signs in either the right or left eye correspond to that side of the body. A spot over the area corresponding to the left ovary in the iris may indicate an actual cyst on the patient's left ovary.
Because iridology is still lacking scientific validation, it is important to consult a medical practitioner following an iridology consultation.