Iridology Is Nonsense
- Article by Stephen Barrett, M.D., offering an explanation and history of iridology.
- http://www.quackwatch.org/01QuackeryRelatedTopics/iridology.html

Irisdiagnosis.net
- A naturopath specialising in iridology, the Bowen method, and vitamin and mineral therapy. Lists details of methods used, courses offered, and lectures given.
- http://www.irisdiagnosis.net/english.html

Iridology
- Finding internal weaknesses through the color of eyes. How iridology originated, pictures, and how it works.
- http://iridologynow.sandycarter.com/

Study the Iris
- Explains how iridology works and what it reveals about the patient.
- http://www.studytheiris.com

Eyeronec Digital IrisScope Photography
- Manufactures irisscopes using a digital camera and photo printer for all professional iridoligists.
- http://www.eyeronec.com

Choices for Health and Harmony
- Diane Elms presents basic treatment information, with details of what to expect at her Ontario practice.
- http://www.choicesforhealthandharmony.com

The Institute of Natural Health Technologies
- Offers information about its available courses, with sales of charts and kits.
- http://www.naturalhealthtech.com

Bernard Jensen Int.
- Sales of charts, videos and related iridology products.
- http://www.bernardjensen.org

The Skeptic's Dictionary - Iridology
- Overview of history, with skeptical analysis.
- http://www.skepdic.com/iridol.html

Iridology Works
- Offers a variety of software for use by both the professional iridologist and the student.
- http://www.iridologyworks.com/

Iridology Page
- Includes the Iridologist's Creed, articles, schools and tools directory, and bulletin board.
- http://www.healingfeats.com/iridolog.htm

Healthline Diagnostics
- Offers a range of equipment, tools and software for the professional iridologist, with details of online courses also available.
- http://www.iriscopes.com

SoftIris
- Overviews, screenshots and ordering information on a selection of iridology software and books.
- http://www.softiris.com/

MD Jones Enterprises
- Introduction and glossary of terms, with details of related products and training seminars.
- http://www.iridology.com/

Iris Studies
- Detailed resources and instructional information, offering product reviews, educational material, news, and images, and links.
- http://www.iris-ward.com/

Iridology Plus
- Canadian Journal of the Science and Practice of Iridology and Preventive Health Care, offering an article archive and subscription information.
- http://www.news2news.com/iridology/

International Iridology Practitioners Association.
- Overview, FAQs and education details, with information about membership, people and events.
- http://www.iridologyassn.org/

Guild of Naturopathic Iridologists
- Details about the organisation, its membership, training, courses and accredited colleges within the UK, as well as background information on the history and practice of iridology.
- http://www.gni-international.org/index.htm

Canadian Neuro-Optic Research Institute
- Details of courses, events, clinical case studies and education tools, with iridology FAQs and information on iris capture systems.
- http://cnri.edu/