Iridology is the only science that can discern your inherent constitutional strengths and weaknesses - even four generations back. It is common for iridologists to rate constitution on a scale of one to ten, with one being theoretically perfect and ten being extremely weak. This can be seen by the fibre quality of the iris. When the iris has a very fine weave, like silk, this would be rated as one - an excellent constitution. When it is a very loose weave, like burlap, this would be given a ten - very weak.
Most irides fall between three and seven.
So, iris analysis can give you a good idea what your inherent strengths and weaknesses are on a scale of 1-10. If indeed you have a weak constitution, then you will know that you need to be careful with how you abuse your body. The iris can show whether the tissues are acidic and inflamed, or not. This is an area of open space within the fibre structure of the iris. If the lesion displays very white iris fibres it is indicating an acute, hyperactive condition.