• Bernard Jensen Int. Sales of charts, videos and related iridology products.

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

• Choices for Health and Harmony Diane Elms presents basic treatment information, with details of what to expect at her Ontario practice.

• Eyeronec Digital IrisScope Photography Manufactures irisscopes using a digital camera and photo printer for all professional iridoligists.

• Healthline Diagnostics Offers a range of equipment, tools and software for the professional iridologist, with details of online courses also available.

• International Iridology Practitioners Association. Overview, FAQs and education details, with information about membership, people and events.

• Iridology Works Offers a variety of software for use by both the professional iridologist and the student.

• Iris Studies Detailed resources and instructional information, offering product reviews, educational material, news, and images, and links.

• Irisdiagnosis.net Offering a variety of diagnosis tools, books, and courses. Product and ordering information, with founder profile.

• SoftIris Overviews, screenshots and ordering information on a selection of iridology software and books.

• Study the Iris Explains how iridology works and what it reveals about the patient.

• The Institute of Natural Health Technologies Offers information about its available courses, with sales of charts and kits.