https://www.sciencealert.com/a-hidden-pattern-in-childrens-eyes-can-reveal-if-they-have-autism
This is the AI version of iridology which maps the entire body and what health conditions a person has.
A study that is centuries old, I had a pregnancy detected by iridology, I was already aware that I was pregnant at the time but it showed up during an appointment for something unrelated.
https://www.herbalclinic-swansea.co.uk/what-is-iridology/brief-history-iridology/