Headhack eye problem, possible to fix?

I’m working on a Chell headhack, this is my first attempt and so far I think it’s gone well, but I’ve run into one problem
that I can’t seem to fix.

Her eyes are completely white.
I’ve checked the materials and everything seems to be fine.
I’m not entirely sure what information would be useful, so, if you need to know anything from the QC or something, let me know.