Iridology International

Learn iridology from a Ph.D. who trained under Bernard Jensen

The Registered Iridologist diploma is a graded, self-paced online program covering American and European iridology. It includes the Iridology Analysis Toolkit and lifetime access to the Iridology Research library.

  • Since 2010Teaching iridology online to health professionals worldwide
  • 20+ hoursof lessons in five modules, each ending in a graded exam
  • 8 chart authorsJensen, Vida-Deck, Günther, Roberts, Bourdiol, Angerer, Velchover, Jausas
  • $944worth of software and library access included in tuition
Macro photograph of a brown right iris showing the pupil, the jagged collarette, dark radial furrows and the conjunctival vessels on the white of the eye.

Tap a marker on the iris. Each sign is taught in the course.

Collarette

The jagged ring around the pupil, also called the autonomic nerve wreath. It divides the pupillary zone from the ciliary zone, and iridologists read its shape, position and integrity as a landmark for the digestive tract and the autonomic nervous system.

Module 2, lesson 9: The Collarette

The software and the library included with the course cost more than the course

Low-cost iridology videos are everywhere now. This program is a different kind of purchase: a graded diploma, an instructor you can write to, and the tools and reference library you will keep using in practice.

An iriscope isn't required. A 4× magnifying glass is enough to complete the course. If you want to photograph irises, the Toolkit is also sold in a bundle with a Dino-Lite iriscope.

Included with the R.Irid. diplomaBought alone
Iridology Analysis Toolkit, unlimited licenseChart overlays, pupil and collarette measurement, constitution typing, reports. Windows, Android, iOS and macOS.$449
Iridology Research, lifetime membershipOut-of-print books, journals, video lectures, case and iris-sign galleries, chart downloads.$495
Value of the included extras$944
Your tuition, with all lessons, exams and the diploma$795$695

Prices in US dollars. Toolkit and membership prices are those listed on iridology-software.com and iridology-research.com.

Five modules, in the order you study them

The program brings together the work of Jensen and the European and Russian schools that most English-language courses leave out. Each module ends with an online exam; you need 75% to move on.

  1. 1Introduction to Iridology5 lessonsWhere iridology came from, how it is studied, and the vocabulary used for the rest of the program.
    1. 1Introduction to Iridology
    2. 2Clinical Study Approaches
    3. 3Iridological Concepts and Screenings
    4. 4Terminology
    5. 5Ancient Symbols of the Eye
  2. 2Structural, Reflex and Pigment Signs of the Eye14 lessonsThe core of the program. How structural, reflex and pigment signs indicate where a process is located and, as far as iridology allows, its mechanism, stage, character and severity.
    1. 1Anatomy of the Eye
    2. 2Lacunae
    3. 3Topolabile and Topostabile Signs
    4. 4Reflex Signs
    5. 5Crypts and Defects
    6. 6Iris Pigmentation
    7. 7Transversals
    8. 8Relief of the Iris Surface
    9. 9The Collarette
    10. 10Toxic and Dystrophic Changes of the Iris
    11. 11Heterochromia, Dyschromia and Pathochromia
    12. 12Adaptive Rings and Arcs
    13. 13Axis Signs
    14. 14Conjunctival Indicators
  3. 3Constitutional Classification7 lessonsThe three main constitutions (lymphatic, haematogenic and biliary or mixed) with their sub-types and syndromes, so common variations in physiology and predisposition can be recognised.
    1. 1The Lymphatic Constitution
    2. 2The Biliary or Mixed Constitution
    3. 3The Haematogenic Constitution
    4. 4Pathological Constitutions and Predispositions
    5. 5Constitutional Syndromes
    6. 6The Three Pre-Cancerous Constitutions According to Broy
    7. 7Constitutional Modification: a Homeopathic Guide
  4. 4The Pupils4 lessonsPupil tone reflects the central and autonomic nervous systems. Changes in pupil colour, size, shape, position, equality and light reaction all carry clinical significance.
    1. 1The Pupils
    2. 2Pupil Deformations
    3. 3Pupil Decentration
    4. 4The Pupillary Margin
  5. 5Iridodiagnosis: Examination Procedures5 lessonsPutting it into practice: examination technique, equipment, iridology charts, and assessing an iris with the included software.
    1. 1Examination Procedures
    2. 2Iridology Charts
    3. 3Installing the Iridology Analysis Toolkit
    4. 4Assessing an Iris with the Toolkit
    5. 5Reading the Assessment Results

Read every lesson description in the full syllabus

Study online, at your own pace

Lessons are on the student site, students.iridologyinternational.com. Work through them in order, track your progress, and take each module exam when you're ready. The course is written for adults who already work in, or are studying, a health field.

  • TimeAbout 10 hours a week is recommended. Most students finish in 3 to 12 months.
  • Time limit12 months to complete the diploma.
  • ExamsOne per module, 75% to pass. Retakes use a different set of questions.
  • FinalA 50-question final exam. High scores earn the diploma with honours.
  • SupportWrite to the faculty at info@iridologyinternational.com or through the student site.
Student dashboard showing the Iridology International R.Irid. Program with its lesson count, total study time and a progress bar. Module 2 lesson list: Structural, Reflex and Pigment Pathological Signs of the Eye, with Anatomy of the Eye and Lacunae, each marked completed with its length and instructor. Module 4, The Pupils, with the Pupil Deformations lesson description.

Practise every lesson in the Iridology Analysis Toolkit

The same software sold at iridology-software.com comes with your tuition, with an unlimited license and lifetime updates. Module 5 walks you through installing it and reading its results. Each part of the Toolkit matches something you learn in the course.

  • Chart overlay screen with a menu of chart authors: Jensen, Velchover, Angerer, Bourdiol, Gunther, Jausas, Roberts and Vida Deck.
    Eight chart overlaysLay each author's chart over your own photographs and compare how they map the same iris.Module 5: Iridology Charts
  • Autonomic nerve wreath analysis with diameter, ratio and asymmetry measurements and a pattern note.
    Collarette measurementMeasures the autonomic nerve wreath's diameter, ratio and symmetry on each eye.Module 2: The Collarette
  • Constitution picker listing lymphatic sub-types such as neurogenic, hydrogenoid and rheumatic.
    34 constitutional typesRecord the constitution and sub-type you identify, in six groups.Module 3: Constitutional Classification
  • Right eye results: pupil-to-iris ratio, ellipticity, circularity and decentration, with pupil form and decentration pattern.
    Pupil measurementsPupil-to-iris ratio, shape and decentration for each eye, with the pattern named.Module 4: The Pupils
  • Advanced research toolkit running crypt and lacuna detection on an iris photograph.
    Crypt and lacuna detectionResearch tools that outline candidate crypts and lacunae for you to check.Module 2: Lacunae; Crypts and Defects
  • Three-dimensional relief view of a right iris with lighting and elevation controls.
    3D iris reliefTurn a photograph into a lit relief surface to study the iris landscape.Module 2: Relief of the Iris Surface

The Toolkit also includes herbal, nutrition, traditional Chinese medicine and chiropractic reference modules that link zone findings to each discipline, plus side-by-side left and right eye comparison and an interface in 18 languages.

Lifetime access to the Iridology Research library

Much of iridology's literature is out of print or has never been translated into English. Iridology-research.com collects it in one searchable place, and your membership never expires.

  • Case study gallery with paired right and left iris photographs grouped by body system, such as cardiorespiratory.
    Case study galleriesPaired right and left eye photographs, grouped by body system.
  • Gallery of iridology charts from American, Asian and Russian authors.
    Iridology chart galleryCharts from the American, European, Russian and Asian schools.
  • Iris sign gallery with annotated macro photographs.
    Iris sign galleriesAnnotated photographs of individual signs.
  • List of online books including works by Velchover, Deck, Andrews and Kriege.
    Books and monographsVelchover, Deck, Kriege, Andrews and more, readable online.
  • List of research articles and papers on iridology.
    Articles and journalsResearch papers, journal volumes and book reviews.

Your instructor: Bryan K. Marcia, Ph.D.

Dr. Marcia wrote the lessons you'll study and founded Iridology International to make structured, university-level iridology training available anywhere. He continues to research, develop and teach iridology for health professionals around the world.

  1. 1994

    Ph.D. in Iridology, University of Health Sciences, HonoluluStudied under faculty director Dr. Bernard Jensen, with Dr. Donald Bodeen as core faculty advisor.

  2. 2000–06

    Associate Professor, Capital University of Integrative MedicineDepartment of Natural Medicine, Washington, D.C.

  3. 2006

    Associate Professor EmeritusAwarded by Capital University of Integrative Medicine.

  4. 2010

    Founded Iridology InternationalTo offer structured iridology programs online, worldwide.

  5. Today

    Research, development and teachingIn the iridological sciences, for health professionals worldwide.

Questions worth asking any iridology course

Whichever program you choose, these are the questions that separate a professional course from a playlist. Here are our answers.

Who wrote the lessons, and how were they trained?Bryan K. Marcia, Ph.D. in iridology (1994), trained under Dr. Bernard Jensen and associate professor emeritus at Capital University of Integrative Medicine.
Is your knowledge actually tested?Yes. There is an exam after every module with a 75% pass mark, retakes are drawn from a question bank, and there is a 50-question final. Every exam is reviewed by Iridology International.
Does it teach more than one school of iridology?Jensen's American iridology alongside the European and Russian research of Deck, Günther, Roberts, Bourdiol, Angerer, Velchover and Jausas, compared chart by chart.
Will you have tools to practise with?The Iridology Analysis Toolkit, with an unlimited license, is included. It is the same software practitioners buy separately.
Can you ask the instructor a question?Yes. Write to the faculty at info@iridologyinternational.com or through the student site.
Is there somewhere to go next?Lifetime research library access, and a Master of Iridology program built around your own thesis.

Programs and tuition

Start with the Registered Iridologist diploma. Graduates with a health sciences degree can go on to the Master of Iridology program.

Diploma program, online

Registered Iridologist (R.Irid.)

$695$795

One payment in US dollars. Complete it within 12 months.

  • Five modules with 20+ hours of lessons
  • A graded exam for each module and a final exam
  • R.Irid. diploma, with honours for high achievers
  • Iridology Analysis Toolkit, unlimited license
  • Lifetime Iridology Research membership

Graduate program, by correspondence

Master of Iridology (M.Sc.)

$2,230

Or 12 monthly payments of $195, or 24 of $98. Complete it within 24 months.

  • 80 credits, including a 10,000-word thesis
  • Case study assessments, tutorials and a community lecture
  • Faculty advisor: Bryan K. Marcia, Ph.D.
  • Online library of textbooks, manuals and case studies
  • For holders of a health sciences degree (B.Sc. or higher, N.D., M.D. and similar)

About accreditation. No iridology school has been accredited by a recognised accreditation agency, and that includes this one. Our programs are professional education. They don't license you to practise medicine, and where the law requires it, you'll need a license from your own state or country to practise.

Common questions

Do I need a medical background?

You need a working knowledge of medical terminology, anatomy and physiology. If you don't have it yet, complete an introductory course in those subjects before you enroll or alongside the first module.

Do I need an iriscope or camera?

No. A 4× magnifying glass is enough to complete the course. An iriscope makes practice easier, and the Toolkit works with ordinary photographs as well as with digital iriscopes such as the Dino-Lite.

Are there any costs besides tuition?

No. All lessons, study materials, exams, the Toolkit license and the research membership are included. The only optional purchase is an iriscope.

How long does it take?

At about 10 hours a week, most students finish in 3 to 12 months. You have 12 months to complete the R.Irid. diploma and 24 months for the Master's program. If you need more time, write to us and ask for a study break.

Can I use the R.Irid. title after I graduate?

The diploma awards the R.Irid. (Registered Iridologist) designation from Iridology International. It's a professional credential from this school, not a government license.

See all questions

Start the Registered Iridologist diploma today

Once you enroll, we'll send your student login, your Toolkit license and your library membership. Then start Module 1 whenever you're ready.