Illustration of Iridology – Chapter 3.2: 3.1 Stomach Ring
The Colon and Intestine Ring is the second ring among the seven zones.
Location: The Colon and Intestine Ring spans from the outer edge of the pupil to one-third of the inner edge of the iris. The reflex zones for the intestines in the left and right eyes are as follows:
- Left Eye Reflex Zone: Transverse colon, descending colon, sigmoid colon, rectum, small intestine.
- Right Eye Reflex Zone: Transverse colon, small intestine, cecum, appendix, duodenum, ascending colon.
Phenomenon: Under normal conditions, the Colon and Intestine Ring occupies the space from the outer edge of the pupil to one-third of the inner edge of the iris. Any deviation—whether exceeding or falling short of this one-third mark—indicates an abnormality.

Description:
- When the intestine ring is less than one-third, it may result in intestinal muscle contraction or spasms, leading to impaired intestinal drainage, digestive disturbances, and related issues.
- When the intestine ring exceeds one-third, it may signify intestinal swelling, weakened intestinal muscles, and a range of intestinal dysfunctions, including poor digestion and irregular bowel movements.