何謂自然療法?Iridology- 虹膜的分析?

Iridology (also known as iridodiagnosis) is an alternative medicine technique whose proponents believe 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 which they correspond to specific parts of the human body. Iridologists see the eyes as "windows" into the body's state of health.
Iridologists use the corresponding charts to highlight certain systems and organs in the body as healthy and others as overactive, inflamed, or distressed. Iridologists may use this information to demonstrate a patient's susceptibility towards certain illnesses, to reflect past medical problems, or to predict health problems which may be developing.
Iridology is primarily used as a diagnostic tool. As it is not a method of treatment, its practitioners often study other branches of alternative medicine, such as naturopathy.
One potential benefit is that iridology is non-invasive; the only discomfort to be tolerated is light being shone in the eyes.