Here I have a MakeHuman model I have been working on with the goal of photorealism:
Notice that the eyes reflect a white plane. That is just my light emitter.
The problem is that my eyes do not render properly. I have employed diffuse, transparent, glass and glossy BSDFs to make the eye shiny and reflective. However, the sclera (white part of the eye) are gray. Nothing I do seems to be able to light them up.
I disabled glass and glossy to solve the problem, but the scleras were still gray. I disabled transparency and the eyes turned black.
How can I fix this color issue while maintaining the glossy nature of the eyeball?
My eyeball lighting setup:
The eyeball texture: