Iridology is the study of the iris or the coloured part of the eye. It is believed that the patterns, colors, and other characteristics of the iris can be examined to determine the current state of a person's health. Iridology does not detect the specific disease per se, however, it can tell if there are any over or under activity in specific organs of the person's body.

Generally, iridology is safe, noninvasive and painless. It should be remembered that it is not a form of treatment therapy but rather a diagnostic technique used to detect and identify any underlying signs of a developing disease. The primary purpose of iridology is to recognise health problems at their earliest stages and offer suggestions on how to stop the disease from developing.

It is believed that the left eye corresponds with the left side of the body and the right eye corresponds with the right side of the body. In addition, the higher organs such as the brain and the thyroid correspond to the top side of the iris and the lower organs like the kidney correspond with the bottom of the iris.

Iridology can detect the following:

Toxins and their locations
Stages of inflammation
Inherent weakness or strength
General health level
Biochemical deficiencies
Changes in tissue structure
Mineral depletion in organs or tissues