Well, wow. More information than I know what to do with.

RedPhanton, what sorts of sample, other than the resulting image? What I've done for that image was to put a large Point Light behind the camera. Dim, but it shows up in the eyes. My shaders are standard, off the shelf, whatever came with the model Pauline. It never occurred to me to look in that area.

hborre, the only material room shaders for this model are cornea and eye. I shall play with reflectivity for those and see what I get.

My wish is to do this in a manner mimicing what happens in a Physical Studio, where catch lights are frequently just a small "catch light" placed behind the camera, more or less. And now I'm thinking of a "catch light" *plus* tweaking the cornea and/or eye reflectivity settings.

Thank you both!

I can post the shaders if needed, but I'm thinking that you guys have already given me everything I need on this one!