Here's what that looks like in a render. At a greater distance, I can make out the underlying sine wave in the orange smoky ring, and it's too far from the pupil. But that sort of thing is easily fixed.

I like it. I think this is going to be a really useful shader. It would be so hard to draw this by hand.

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Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)