The Iridology Course offers an in-depth and clinically focused study of iridology, drawing on contemporary research, extensive case material, and the teaching of Professor Bryan Marcia, an active researcher in the field who earned his Ph.D. in Iridology in the United States.

Students are allowed to immerse themselves in thousands of iris images, real clinical case histories, and a wide range of iridological concepts and techniques. The course is designed to help students develop confidence in iris analysis and understand how iridology may be used as an adjunctive analytical tool in clinical practice.

The course consists of 15 lessons, with an online examination at the end of each lesson.

Course Curriculum

Lesson 1 – Introduction to Iridology

An introduction to the history and development of iridology, from early discoveries through to modern technological advances. This lesson also explores research findings from recent decades that have expanded understanding of the eye’s reflected information systems and their relationship to the body.

Lesson 2 – Anatomy of the Eye and Iris Examination Procedures

Covers the anatomical foundations of the eye, including the anterior eye, iris histology, iris surface characteristics, physiological function, common pathology, inborn anomalies, diseases of the iris, benign tumours, and examination procedures used in iris analysis.

Lesson 3 – Integrative Iridology Chart

Introduces students to the wide range of iridology charts and explains how chart differences can be understood and compared. Historical and modern charts are examined, together with integrative recommendations related to the topographic sectors of the iris.

Lesson 4 – Structural Signs of the Iris

Explores structural, reflex, and pigment signs in the iris, and how these may provide information about the location, nature, stage, and intensity of imbalance or pathology.

Lesson 5 – Constitutional Classification via the Iris

Examines the many constitutional variations seen in the iris and their relationship to prevention, susceptibility, reactivity, and treatment principles. This lesson highlights the value of identifying constitutional tendencies before pathology becomes established.

Lesson 6 – The Autonomic Nerve Wreath

Studies the autonomic nerve wreath (ANW), its origins, forms, and significance in iridological analysis. Students learn how ANW patterns may assist in identifying active constitutional and genetic weaknesses.

Lesson 7 – Pupils and Pupillary Symptoms

Focuses on pupil analysis, including colour, size, shape, position, equality, and reflexes, and the clinical significance of pupillary changes in a range of neurological and systemic patterns.

Lesson 8 – Toxic Dystrophic Signs of the Iris

Examines toxic and dystrophic iris changes and how iridological signs may reflect toxic burden and tissue changes. This lesson also includes lifestyle considerations and supportive clinical recommendations.

Lesson 9 – Heterochromias of the Iris

Explores inherited and acquired colour changes in the iris, including local and diffuse heterochromias, pigment spots, toxic and drug-related discolouration, and the importance of colour interpretation in practice.

Lesson 10 – Adaptive Rings and Arcs

Studies contraction rings, adaptive rings, and arcs within the iris, reviewing different theories concerning their formation and clinical relevance.

Lesson 11 – Pigment Spots in the Iris

Covers the interpretation of pigment spots, including their colour, density, size, and form, and how these may assist in clinical evaluation.

Lesson 12 – Conjunctiva Signs

Introduces the analysis of the bulbar conjunctiva and how conjunctival observations may complement iridological findings.

Lesson 13 – Iridological Axis Signs

Examines axis signs such as lacunae, crypts, radial furrows, pigment markings, and collarette signs found in specific areas of the iris, and their potential interpretive value.

Lesson 14 – Transversals in the Iris

Focuses on transversals as important focal signs in iris analysis. Students review clinical examples and learn how transversals may relate to tissue change and congestion in corresponding body areas.

Lesson 15 – Iridodiagnostic Examination Procedures

Brings together the methods used in complete iridological examination, including visual and iridoscopic assessment, expert interpretation of iris signs, and the devices used in modern iris analysis.

Included with the Course

All students receive access to:

• 15 course modules
• three iridology charts
• student web server database access
• online videos
• case studies
• searchable databases
• lifetime account access

The course is also described as being recognised by The Capital University, Washington, DC, USA.

Course Requirements

In addition to the core lessons, students are encouraged to spend time reviewing supplementary reading material, researching the online resources, and studying the many case histories provided throughout the course.

Students who wish to use iridology professionally may also wish to invest in an iridoscope, which allows iris images to be captured and examined digitally, often with the support of specialised analysis software and professional reporting tools.

Course Goals and Objectives

By the end of the course, students should be able to:

• understand iridology in both its historical and contemporary contexts
• explain the central hypotheses and principles of iridology
• recognise the role of iridology as an adjunctive analytical modality
• compare North American iris analysis with European and Asian iridodiagnostic approaches
• develop practical skill in iris reading using magnification, photography, and digital systems
• analyse more complex cases, including brown and highly pigmented eyes
• understand the significance of pupil reflexes in neurological and systemic patterns
• identify key structural, pigment, reflex, and constitutional signs in the iris
• interpret autonomic nerve wreath patterns and adaptive rings
• understand toxic-dystrophic classifications of iris signs
• recognise clinical changes in pupil colour, size, shape, and reflex response
• understand the significance of pigment spots, conjunctival changes, and residual iris markings
• explore constitutional variations and associated treatment principles
• use clinical and educational forms suitable for practice
• follow a complete iris analysis process with confidence
• engage with current iridological research and developments
• successfully complete the course examinations

Course Materials

All course materials are available online and can be accessed from anywhere in the world. Materials include:

• images
• videos
• animations
• assignments
• examinations
• case study image galleries
• searchable libraries
• rare books and articles
• Professor Marcia’s extensive iridology library

Students also receive access to an iridological analysis software package with one year of registered student access, allowing them to explore computer-assisted iris examination and related analytical techniques.

What Is Included

• Clinical Iridology Course software installer with 15 modules
• Iridological Analysis Professional Software (one-year registration)
• Downloadable iridology, pupil, and constitution charts
• Access to case study image galleries and libraries
• Certification
• Examinations

Please note: the iriscope is not included.

Grading Policy and Exams

Each lesson concludes with an online examination, and all results are automatically transferred to the student’s online grade book.

To progress to the next lesson, students must pass each examination with a minimum score of 60%.

The course includes:

• 15 lessons
• 15 end-of-lesson exams
• online grading by the Da Vinci Institute of Holistic Medicine

Each examination is based on the lesson material covered and must be completed before progressing further in the course.