Iridology is the study of the eye. Iridology is an effective health assessment tool in preventative health care and cannot be used to diagnose a specific disease condition. It can, however, provide information about the body tissues, which may indicate tendencies toward disease conditions, often before symptoms appear. It can also indicate the presence of inflammation and toxic conditions that provide an environment for their development. Basically, this is a wellness evaluation that uses the iris of the eye to locate areas of strength and weakness in the body.