I followed a tutorial (https://www.youtube.com/watch?v=E0JyyWeptSA) on youtube for the procedural eyes of my sculpture. I used nodes to make them. When I render my sculpture, the colour of the iris doesn't show. However, when I render the eyes in the same file but outside of the head, the colour shows. I think it has something to do with the sclera and the way the light hits the eye. Maybe someone can help me with this problem.