odf posted at 1:31 AM Sat, 1 October 2022 - #4445613

Okay, had a closer look. The corneas become transparent and the irises visible in preview when I set the renderer to FireFly in the render settings. Looks like the preview tries to mimic the active renderer, but then throws up its arms when that's SuperFly and Cycles nodes are involved.

Can anyone confirm?

Yes. Can confirm.