Iridology: what the eyes tell us about health

Dr. Boris Wydoff · 2026-09-10

"The eyes are the mirror of the soul," says the proverb. Naturopathy adds: and of the body too. Iridology — the art of reading the iris of the eye — is one of the oldest diagnostic tools of natural medicine, and I have used it throughout my practice.

HOW IT WORKS
The iris is not simply "the colour of your eyes". It is a tissue threaded with thousands of nerve endings connected to the organs of the body. When an organ works under strain for a long time, this shows in "its" area of the iris: the density of the fibres changes, signs, darkenings and rings appear. A trained eye reads that map the way a navigator reads a chart.

What iridology does best

Its strength is early warning. I have already written about kidneys that grow tired in silence for ten or fifteen years while the tests stay normal: an experienced iridologist sees the first kidney changes long before they reach a lab form. The same goes for strain on the liver, the bowel, the nervous system. Iridology answers not the question "what disease do you have" but the question "where is it thin" — where to direct your attention, your food and your cleansing, before the thin place tears.

What you can notice yourself

Without claiming to make a diagnosis, take a look in a good mirror in daylight: a persistent whitish ring at the edge of the iris, a noticeable darkening of separate sectors, a "loosening" of the fibres. These are not verdicts and not diagnoses — they are reasons to treat your body more attentively: to sort out your cleansing, your food, your sleep. The eyes change as the state of the body changes — years of work on yourself show in the iris as well.

Where the method's limits lie

Iridology is not a replacement for a medical examination. It shows weak places and overloads, but it will not tell you your blood pressure numbers and it will not replace a blood test. In my practice it works in a pairing: the iris suggests where to look — and then come observation, the person's own history and, where needed, medical diagnosis.

A word of caution

Do not diagnose yourself from photographs on the internet, and do not stop treatment you have been prescribed because of "signs in the iris". Iridology in reliable hands is a navigator; in unreliable hands it is fortune-telling.

Frequently asked questions

What is iridology?

A method of assessing the state of the body by the iris of the eye: strain on the organs shows in the areas of the iris connected to them — in the density of the fibres, in signs and darkenings.

Can iridology replace lab tests?

No. Its strength is early warning and a hint about where to look for the weak place. Diagnoses are made by medical diagnostics; iridology is a navigator, not a verdict.

What can I see in my own eyes?

In daylight: a persistent ring at the edge of the iris, darkening of sectors, a loosening of the fibres. These are not diagnoses but reasons to take up cleansing, food and sleep.

Where to start — step by step

This article is part of my system of natural healing. Start with the free guide "7 Steps to a Cleaner Body": water, nutrition, juices, warmth and mindset — one step a week.

Get the free book Full methods — in the books →
Dr. Boris Wydoff

Boris Wydoff — naturopathic doctor, Ph.D. For over fifty years I have helped people restore health through nutrition, cleansing and the power of the mind — in Europe, America and Asia. About the author →

Read next