Comparison of the Cycles shader from EZSkin3 (left) and default Diva Shader/textures. On the cycles shader I changed the "Pore Strength" from 1 to 0.3 as it was too bumpy for my tastes. I did this manually as EZskin was not responding (probably needed close/restart). If you notice-on the character on left- the right eye is dark. That is the shader. I opened Materials and went to the IRIS shaders, and changed the SSS in the following way-I disconnected the White Color plugged into Radius. Click on Radius and you see 0.0, 0.0, 0.0. I changed that to 10.0, 10,0. 10.0. After that the Iris is visible as can be seen in the left eye of the left character.