Because there are many nerve endings in the eye, all linked to the body's organs, iridologists assert that examination of the eye, especially the irid, its colour and markings, can indicate problems in other parts of the body and reveal weaknesses and strengths  in general health, such as a tendency  towards a particular  disease.

Iridology is not a restorative therapy; it  doesn't cure and it doesn't pinpoint particular ailments Iridologyt identifies weaknesses or overactivity in the body so that future problems can be avoided. For example, if the pancreas is seen to be underactive, it could indicate a condition like diabetes. Iridology also recognises where toxins and inflammation could be, as well as certain chemical deficiencies. to determine your general state of health and constitution. 

For example, the area immediately around the pupil relates to the stomach and the area around that represents the intestines. It is said that the pattern of the irid is like a genetic map of the body, showing inherited traits  and pinpointing weaknesses. Changes in this pattern can reflect changes in  the body.

Iridology is the science and practice that reveals inflammation, where located and in what stage it is manifesting. The irid reveals body constitution, inherent weaknesses, levels of health and transitions that take place in a person's body according to the way one lives. Iridology is the science of analyzing the delicate structures of the irid of the eye