BTW, I have been wracking my nearly-senile brain, because I couldn't remember, but I think this is what was once referred to as the "cameo death gene" -- I couldn't remember if the birds actually had increased mortality from the gene itself, or simply as a consequence of the blindness. I'm am pretty sure there was more info over on the UPA forum (where the heck did it go???), but I found a couple of old threads with references to it here on BYC. You'll have to scroll through the page to find the stuff...
There's also a reference on this page which suggests bronze (or some of them) may have done variable white molting, but were thought not to go blind:
However, if you read carefully in the first two BYC threads that I linked above, there is a mention of a bronze bird with progressive white that became blind. So perhaps there is an association after all?
@Birdrain92, hurry up with that education of yours and see if you can't research this for us! This takes more lab equipment that even @casportpony has (I think)...