According to what I have read about iridology the only colour bases are light blue and light brown. Everything else is a (bad) variation.

The green is just an overcast on a blue base which is supposed to turn back to blue with a true healthy lifestyle.

Hi
I have observed many patient's irises over the years and your question is hard to answer for a number of reasons. It is mostly woman the visits Doctors and Naturopaths Men are perfect and never have anything wrong (they just drop dead one day)OK you got my drift... Mucus and catarrh shows up as a yellow film in the iris and with blue underneath this yellow the eye becomes a shade of green.
As you have noticed a good detox and eating habit will reduce the yellow/green and the real iris color will be revealed.
If one takes all the milk, cream, gravy, mayo, souses, white bread etc out of the diet the lymph will clear. Skin brushing and trampolining as well as self massage will also help.
Eat organic NON Genetically-Modified-Organisms foods only and your body will thank you.
Best of health
Leo