Another thing that I'm not sure about but I'll say anyway - I think V4's cornea bulge is not anatomically correct. I think it is too flat - not enough curvature.

When a surface curves more, it reflects to you a larger part of the world. This means that more of the world fits into the same space. In other words, as curvature increases, reflected things look smaller.

Perhaps you want to override V4's limit of 1 on the cornea bulge, and instead set it to 2 as I've done here. It makes the highlights smaller. This is the same window, but look now - it's a tiny reflection on the curved cornea.

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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)