The white of the eye is called the sclera. The sclera is the most reactive part of the eye, but the visible markings should be considered in context with signs in the iris to get the total picture.
Some sclera signs develop as a display of constitutional aspects - that is, once developed, they remain a permanent fixture - whereas some of the lighter sclera signs are transient.
The interpretation of the sclera is an important part of eye diagnosis as it pertains to tissue integrity, the immune, hormonal, hepatic, and nervous systems but emphasizes the circulatory system in particular. Heart disease is the number one killer in western society, and natural therapies have disease prevention philosophy.
The sclera will often give sub-clinical signs that guide us to identify existing or developing health crises. This allows an iridologist to suggest health measures which could be preventive - even life saving. When a specific potential is identified, it should be considered as important to the health profile.