This is realistic model of human eye. It is low poly with meshsmooth modifier on top.
The iris is animate able to demonstrate eye contraction. It is made with 2 additional morph objects (iris in dark and iris in light environment) To make it easier to use, there is slider on viewport that can be moved from 0 - 100. 0 - in light environment very small pupil, 50 - normal pupil size, 100 - wide open pupil means eye condition in dark environment.
Objects are linked in relation and then linked to dummy object.
Materials are Vray and procedures that comes with 3ds Max. They are full adjustable so you can get any color you wish. The UV are setup on 3 id.