An iridology reading is the traditional practice of looking closely at the iris, the coloured part of the eye, and reading it as a map of a person’s constitution and vitality. Practised within natural healing traditions for well over a century, it offers a gentle way to understand your inherited strengths and the areas of your body that may ask for a little more care.
At the Vitalist Healing Traditions Society, iridology is one lens among many. It is a place to begin a conversation. Here is what the word means, how the tradition began, and how an iridology reading moves through the iris, zone by zone.
Key takeaways
- Iridology is the study of the colours, patterns and structures of the iris, read for “constitutional tendencies and patterns of health” [8].
- The tradition traces itself to Ignaz von Péczely of Budapest, who published the first part of his work on the eye in 1880 [1] [3].
- A reading moves from the pupil outward, through seven zones, with the nerve wreath about a third of the way out [4].
- The closeness and evenness of the fibres are read as constitutional strength [4].
What does iridology mean?
The word joins iris with -logy, study. As Bernard Jensen, the tradition’s great twentieth-century teacher, put it, “Iris was the goddess of the rainbow in Greek mythology” [4]. The English name was in print by 1916, in the title of Nils Liljequist’s book [3], while German readers had long known it by a name meaning eye reading [2].
Today the tradition’s international association, the IIPA, defines iridology as “the study and observation of the colors, patterns, structures, and other visible characteristics of the iris” [8]. Look closely at an iris and you will see a dense, textured landscape of fibres, openings and shifts in tone. The tradition reads that landscape as a living map.
Who invented iridology?
The history of iridology begins with an owl. As a boy in Hungary, Ignaz von Péczely caught or shot an owl and injured it, and in that instant saw a dark streak appear in the bird’s eye [2] [3]. The two early tellings differ on the details: Emil Schlegel’s book of 1887 has the boy shoot the owl, while Liljequist’s account has him try to capture it [2] [3]. Both agree on the streak, and on the lifelong curiosity it began.
Péczely (1826 to 1911) went on to make the eye his life’s study [9]. In 1880 he published, in Budapest, the first part of his Entdeckungen auf dem Gebiete der Natur- und der Heilkunde, “Discoveries in the Field of Natural Science and Healing” [1]; some accounts give 1881 [2]. He lived and worked at 30 Magyar Street in Budapest until his death [9].
In Sweden, Nils Liljequist (1851 to 1936) [11] made the same study his own, and the tradition remembers him as its second discoverer [3]. In America, Henry Lindlahr set out “the seven zones of the iris” in a book published in Chicago in 1919 [5]. Bernard Jensen, born in Stockton, California, in 1908, studied iridology with Richard Murrell McLain of Oakland and published The Science and Practice of Iridology in 1952 [6]. Over a long life he wrote dozens of books [7], and he called his iris chart “the fruit of 50 years of research and intense study” [4]. In Germany, Josef Deck carried the European school forward; his first book in English appeared in 1982 [10].
How do you read iridology?
Learning how to read iridology starts with order: a reading moves through the iris in steady steps. It begins with the whole and then travels from the pupil outward.
The overall impression
The first look takes in the iris as a whole. Jensen called this the “overall” impression and said it “gives a feeling for the constitutional character of the iris” [4].
Fibre density
Next the reader looks at the fibres. “The closeness of the fibers and their uniformity indicates a constitutional strength,” Jensen wrote [4], and Lindlahr read the density of the iris as a picture of “the degree of vitality and to the general tone of the system” [5]. Jensen rated constitution on a scale from 1 to 10, with 5 as average and 1 as the highest [4].
The nerve wreath
About a third of the way out from the pupil lies the first major landmark, the iris frill or autonomic nerve wreath [4]. Lindlahr called it the sympathetic wreath [5]. In the tradition’s map, it separates the organs of digestion and assimilation, inside it, from the rest of the body beyond it [4].
Zone by zone
The tradition maps the iris in seven zones, counted from the pupil outward [4] [5]:
- Zone 1: the stomach, immediately around the pupil [4].
- Zone 2: the small and large intestines [4].
- Zone 3: in Lindlahr’s map, the pancreas, kidneys and heart [5].
- Zone 4: in Lindlahr’s map, the respiratory organs [5].
- Zones 5 and 6: the other organs and tissues, placed as the chart shows them [4].
- Zone 7: at the outer rim, the skin, hair and nails [4].
Two more rules complete the map. The brain is read in the upper regions of the iris [5], and “the right iris responds to the right side of the body and the left responds to the left side” [4]. Jensen described the chart itself as a map, and counted over 90 specific areas on each iris [4]. For the full chart, see our guide to iridology and sclerology.
What does an iridology reading show?
In the tradition’s own words, a reading assesses “constitutional tendencies and patterns of health within the body” [8], and shows “where inherent strengths and deficiencies are located” [7]. The iris is read as a picture of the constitution you were born with and the way your system tends to meet the world.
Iridology reads the iris the way a gardener reads soil: to understand the terrain you were given.
Shifts in tone and small markings are read as places that may welcome gentle attention: invitations to nourish. The tradition’s outlook is warm: Jensen taught that “a weak constitution properly cared for can have good health and a long life” [4].
By the numbers
How does the Society use iridology?
An iris reading is one thread we weave with your history, your goals and our other observation methods. Read alongside the whole, and guided by the vitalist approach, it helps us offer gentle, individualized suggestions for food, rest and rhythm. This constitutional picture is exactly what a Whole Reading is designed to reveal. The Reset-90 pathway carries that picture through ninety days with both founders.
| Practice | Family | What it reads | Read more |
|---|---|---|---|
| Iridology | Iridology & Sclerology | The iris, read as a map of constitution | Iridology and sclerology |
| Sclerology | Iridology & Sclerology | The whites of the eyes and their fine lines | Sclerology chart |
| Face reading | Chinese medicine | Colour, lustre and the five zones of the face | Face reading |
| Constitutional homeopathy | Homeopathy | The whole picture of a person | Homeopathy vs Naturopathy |
| Naturopathy | Naturopathy | Terrain, rhythm and the healing power of nature | Naturopathy |
Frequently asked questions
What does an iridology reading show?
In the tradition’s words, a reading assesses “constitutional tendencies and patterns of health” [8] and looks for “inherent strengths and deficiencies” [7]. It begins with the overall impression, read as the constitutional character of the iris [4].
How do you read iridology?
From the pupil outward: zone 1 for the stomach, zone 2 for the intestines, the nerve wreath about a third of the way out, then the zones beyond it to zone 7 at the rim, for the skin, hair and nails. The head is read toward the top, and each iris for its own side of the body [4] [5].
What does iridology mean?
It is the study of the iris, the word joining iris, named for the Greek goddess of the rainbow, with -logy, study [4]. The older German name means eye reading [2].
Who invented iridology?
Ignaz von Péczely of Budapest (1826 to 1911), who published the first part of his work on the eye in 1880 [1] [9]. Nils Liljequist of Sweden is remembered as the tradition’s second discoverer [3].
Who was Bernard Jensen?
The American teacher who carried iridology through the twentieth century. Born in Stockton, California, in 1908, he studied iridology with R. M. McLain, published The Science and Practice of Iridology in 1952 [6], and wrote dozens of books before his death in 2001 [7].
Sources
- Péczely I. Die chronischen Krankheiten. Heft 1, Anleitung zum Studium der Diagnose aus den Augen. Originally Budapest, 1880; facsimile, Thannhausen: Cupuri, 2001. Wellcome Collection catalogue record.
- Schlegel E. Die Augendiagnose des Dr. Ignaz von Péczely nach eigenen Beobachtungen [in German]. Tübingen: F. Fues; 1887.
- Liljequist N; Larson JD, translator. The Diagnosis from the Eye: Iridology, volume 1. Rockford, Illinois: The Iridology Publishing Co.; 1916.
- Jensen B. Iridology Simplified: An Introduction to the Science of Iridology and Its Relation to Nutrition. Escondido, California: Bernard Jensen; 1980.
- Lindlahr H. Iridiagnosis and Other Diagnostic Methods. Chicago: The Lindlahr Publishing Co.; 1919.
- Keating JC Jr. Chronology of Bernard L. Jensen. Typescript, 1997. Chiro.org.
- Jensen E. In Memoriam and What is Iridology? ellenjensen.com.
- International Iridology Practitioners Association. What Is Iridology? What Is Sclerology?
- Globetrotter19. Memorial plaque to Ignác Péczely, 30 Magyar Street, Budapest. Wikimedia Commons; 2023.
- Open Library. Books by Josef Deck, including Principles of Iris Diagnosis (Ettlingen, 1982).
- Deutsche Nationalbibliothek. Liljequist, Nils. Gemeinsame Normdatei 126474230.
This article is for educational purposes only and is not medical advice. The practice described is a traditional assessment method. Nothing here is intended to diagnose, treat, cure, or prevent any disease, or to replace evaluation by a licensed healthcare provider. Please consult a qualified professional regarding your health.
Images: featured painting, Johannes Vermeer, Girl with a Pearl Earring, about 1665. Mauritshuis, The Hague, public domain, via Wikimedia Commons. In-article photographs credited in their captions.