Mannheim Peritonitis Index. A prognostic scoring system used to predict mortality in patients with peritonitis. Long-term survivors have an MPI score of about 20; non-survivors have a score of 33. Risk factorâScore.
What we do know for sure about the Three-Eyed Raven is that he is a Greenseer, gifted with the ability to see the past, present, and future and communicate through dreams. Greensight is more common with the Children of the Forest, but some humans, like the Three-Eyed Raven, also have this ability.
A creature with two eyes that are used together to view a single image is said to have binocular vision. Creatures with binocular vision have many advantages over creatures with only a single eye or creatures who are not able to use their multiple eyes together. At a very simple level, a second eye provides a safe level of redundancy; if one eye is lost, another is still there, allowing the creature to see.