iridoscopy
Iridology is a pseudoscience that claims an individual's health status can be determined by examining patterns, colors, and other characteristics of the iris of the eye. Proponents of iridology believe that the iris, the colored part of the eye, contains a map of the body. Specific zones within the iris are thought to correspond to different organs and systems.
The practice of iridology involves observing these iris patterns, often with the aid of magnification tools.
However, iridology is not recognized as a valid medical diagnostic tool by the scientific and medical communities.