here I tested the material with shadow and created the outer ball of the eye.
Here I created the second iris layer and formed a connection between the layers. However, I was not satisfied with the result. That’s why I decided to sculpt the iris as an object and depict the subtleties with texture.
at the beginning I tried to create the iris with the Xgen. Which I adjusted later in Zbrush. Since the iris consists of an inner and an outer area, I tried to create it in the second phase.