Iridology
![The iris is the greenish-yellow area surrounding the transparent pupil (showing as black). The white outer area is the sclera, the central transparent part of which is the cornea.](/Images/godic/202501/21/Iris.eye.225px5443.jpg")
![This is an example of an iridology chart, correlating areas of the left iris, as seen in the mirror, with portions of the left hand side of the body. Changes in color or appearance of the iris are said to indicate changes in the health of the corresponding section of the body.](/Images/godic/202501/21/Iridology_iris_eye_chart_left_mirror5443.jpg")
![This is the corresponding chart for the right iris, which relates to the left side of the body.](/Images/godic/202501/21/Iridology_iris_eye_chart_right_mirror5443.jpg")
Iridology (also known as iridodiagnosis or iridiagnosis) is an alternative medicine technique whose proponents claim that patterns, colors, and other characteristics of the iris can be examined to determine information about a patient's systemic health. Practitioners match their observations to iris charts, which divide the iris into zones that correspond to specific parts of the human body. Iridologists see the eyes as "windows" into the body's state of health.