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Updated: Apr 3, 2019

By Nancy Seals, as seen in NW Women’s Show Magazine 2011

The eye is an extension of the brain, recording patterns relating to physical conditions of the body.

Iridology has its beginnings in Europe. Sclerology has its basis in the Chinese culture as well as in Native American oral tradition that has been passed down from generation to generation. Russia uses this tool extensively and it is taught in their medical schools. Why? It is affordable and less invasive.

This technology helps to educate the client, encouraging them to make better life decisions. It looks at the body from a holistic prospective. Its best feature is when used as a tool for prevention.

In practice, the Iris and Sclera are photographed by the Iridologist/Sclerologist using a specially designed high tech digital camera. The images are transferred to a computer screen for immediate evaluation. Photos are kept as a record for comparative use in the future.

Iridology: The Study of the Color Part of the Eye

Iridology shows genetic tendencies related to potential physical health concerns. In examining the iris, the focus is on light, dark, color changes, and patterns in the iris of the eye. During one’s lifetime very little notable change will take place in the iris, however, there is the base line of integrity of health such as  the of the colon, circulation  immune system etc.

Sclerology: The Study of the White of the Eye

Sclerology reveals changes in the healing process or how chronic a problem may be. It is focused mainly on the red veins, indicative of current conditions. Often the reddest vein shows the stage, congestion, inflammation or how chronic the organ is becoming. Under magnification, different patterns show different situations such as blood pressure, conditions at the cellular level, vessel pooling, or hardening of veins or tissue. Parasites and growths can also be seen in this area along with the root of the problem and other organs of involvement.

For example:A problem in the stomach area shows up in the Iris; however, in the sclera red lines show up to identify the specific cause, such as a lack of digestion of carbohydrates, fats or protein and other organs of involvement, especially in the pancreas, to name just one.

Do you have questionsabout health concerns such as: Colon • Brain Activity • Areas of Inflammation • IBS • Digestion • Nutrient Absorption • Kidney • Stroke Signs • Kidney or Gallbladder Stones • Heart Conditions• or Conditions of the Veins or Arteries?

Health practitionerssuch as Naturopaths, chiropractors, nutritionists, massage therapist, body workers, acupuncturists, etc. can use this tool to help their clients more effectively.

NOTE: this is not a medical exam or a definitive diagnosis of disease.

Personality Iridology

Personality iridology is a study of the Iris providing a fundamental understanding of personality traits and their functions in our life regarding behaviors effecting our emotions. It is very helpful in understanding the health of an individual.

Nancy Seals is a Certified Iridologist since 1978/Sclerologist since 2006. Nancy is registered with IIPA, International Iridology Practitioners Association, served on Board of Puget Sound Wellness, and is a television producer for 12 yrs in health related fields.


Excerpt from Flourish, a Go-To Guide For Herbal Medicine by Tierney Salter

Primary Constitutional Types

While the study of Iridology is vast and intricate, everyone can glean valuable health information from the eyes - beginning with eye color, as this determines what iridologists call one’s primary constitutional type.

There are 3 primary constitutional types: brown eyes (Hematogenic), blue eyes (Lymphatic) and mixed brown/hazel eyes (Biliary). Each type is constitutionally predisposed to its own health challenges. Thus, there are supportive lifestyle, herbal, supplemental and dietary factors that each type can do to promote balanced health.

Iridology - Lymphatic Constitution

These people have a blue or blue-gray iris. The fibers are easily viewed and may be straight and silk-like or slightly wavy and moderately spaced. Other colors may be visible, but the predominant color is blue.

Potential Challenges

Lymphatic refers to the lymphatic system in the body. The lymphatic system is comprised of a network of vessels that function as part of the immune system to circulate fluids throughout the body. People with this constitution are prone to lymphatic congestion and overactive immune function. They are also prone to catarrhal (mucousy) conditions in the respiratory system and sinuses such as allergies and hayfever, colds and flu, asthma, bronchitis, etc. They have a tendency towards swollen lymph glands, and do not do well in cold, damp climates or seasons. Skin afflictions such as eczema, psoriasis and dandruff are common due to lymphatic congestion and overactive immune function. These people’s systems are overall more sensitive, environmental and food allergies are common. Inflammatory in general, lymphatic people are prone to stiffness, arthritis, rheumatic disorders, and aching muscles.

Blue irises with a white-grey background often have problems with acid indigestion. Blue irises with a yellow background suggest challenges with kidneys and lungs.

Editor's Message: People with this condition can consider elements that can support lymphatic/immune health, promote healthy elimination, and provide sinus and respiratory/allergy support. See Flourish for detail suggestions.

Iridology - Biliary Constitution

Biliary is a mixed brown eye, some may say they have hazel or pure brown eyes. There is often a brown pigmentation especially around the pupil, though sometimes gold, orange or red may be present. This iris is prone to pigmentary changes and may be observed to lighten or darken with time.

Potential Challenges

Biliary refers to bile, a substance secreted by the liver and gallbladder for fat digestion. People with this iris type are prone to liver and gallbladder insufficiencies, so it is always important to support liver health and function. As the liver and gallbladder are often weak, there is often challenges with fat digestion and metabolism, creating a potential for high cholesterol. A weakness in pancreatic function is common, creating a potential for blood sugar challenges. Gastrointestinal and digestive issues including constipation, diarrhea, bloating and indigestion are also common.

These people are most prone to Metabolic Syndrome – a modern disorder characterized by insulin resistance, hypertension, high cholesterol and stress intolerance.

Editor's Message: People with this condition can seek elements that can offer daily digestive support, liver and gallbladder support, promote healthy elimination, provide blood sugar support and perform seasonal cleansing. See author's suggestion in Flourish.

Iridology - Hematogenic Constitution

These people have a pure brown iris with dense pigmentation that looks almost ‘velvety’ with little or no visible fibers.

Potential Challenges

Hema means blood. People with this iris type are predisposed to blood abnormalities, such as anemia and other blood disorders. They have difficulty absorbing and storing minerals. Most often there are digestive and eliminatory sensitivities, such as indigestion, dyspepsia, flatulence, constipation, diarrhea. Also there is glandular weakness in the thyroid, adrenals, and pancreas affecting overall energy and metabolism. There is a tendency for circulatory disorders, varicose veins, hemorrhoids and arteriosclerosis (hardening of the arteries).

Editor's Message: Based on the above diagnosis, this group should seek multiple mineral support, consider elements that promote healthy metabolism, healthy circulation, and support digestion and elimination. See author's suggestions in Flourish.

Tierney P. Salter has been a practicing Medical Herbalist and Iridologist for over 30 years. She is founder and president of The Herbalist, an herbal company that manufactures therapeutic herbal products. She operates a retail herb store that has been serving the Pacific Northwest for over 25 years.


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