For the eyes you don't set the film thickness. That is only for special effects.

The cornea of the eye usually comes perfect straight from Reality, there is really nothing to retouch, unless you have textures in the wrong place, like bump map.

The cornea should have IOR 1.4, set to archi, pure white transmission and pure white reflection. No textures anywhere, unless you are going for supernatural effects. The same for the eye surface (V4, not Genesis).

That's all that you need. The rest is in the lighting.

Hope this helps.

Paolo

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