Quote - Mathman,

Not to state the obvious but if you are frustrated with all the eye surfaces, why not make the eyecover invisible? Then add your speculars to sclera and cornea.

Or, set transparency to say 88% on eyecover. You can still get refract effects, etc.

 

It may not be the current way of doing it but you can progress and pick up on other tech as you go. I put a reduced size anistropic right on the cornea and increase reflect to 2.00 sometimes.

I'd turn IDL on first. Render it small so it's fast...

nor sure you need bump or imagemap on cornea.

The eye surface is already invisible.