Iridology started in tha late 19th century when an Hungarian doctor Ignatiz Von Peckzely realized that an owl changed its eyes when he had a broken leg, comparing them when he recovered from this problem.
But this science didn't become popular until Dr Bernand Jensen started to use it in the United States. Bernard Jensen's chart, which shows every organ in each eye is widely known today, and results the foundation of every iridology software created to help iridologists with their work.
Iridologists say that iridology is very useful to diagnose diseases such as heart diseases, skin problems and different type of allergies.
Iridologists find spots or flecks on the iris which correspond with different types of the body, and according to that they are able to know there is a problem in that part.
The help of technology is undeniable. Modern softwares allow to put iris photographs over Bernard Jensen charts, making the diagnosis much more precise. The iridologist can determine the exact part of the body the person may have a disease.
Without the use of this type of software, iridologists shoud do their work manually, resulting on a less precise diagnosis.
Besides the precision that allows the use of this type of iridology software, the use of the software lets the iridologist work on a central place, having combined the history of the patients with the iris analysis.
There are options of free iridology software offered to download on the internet, but the best options are the paid ones. However, it is common to find companies that allow you to use a trial version of their software, for example, limited to a certain number of uses, which can be useful to test it against your manual work, and realize how much this type of software can help in the diagnosis.