Iridologia nu va arăta sau nu va numi o anumită boală, ci oferă informații despre țesuturile corpului care indică tendințe spre condiții de “boală”, often before symptoms appear. Iridology will not reveal surgery performed under anesthesia as nerve impulses are discontinued. Iridology cannot locate gallstones or germ life, but will indicate the presence of inflammation and toxic conditions which are a refuge for their development. It will not show pregnancy, as that is a normal function of the female body.