My OJ had excessive PPM to the point you could see with the naked eye, in his litter, he had two that had total sheeting over one eye and the other had excessive PPM as he did. So he would have never CERF'ed. And PPM runs in his pedigree. This was one of the reasons he was never bred. However, all that said if this was the only reason that I decided not to use him, things might have been different. As breeders not everything is going to be perfect. In the end we all need to decide what we can and can not live with in doing a breeding.
And I also agree, the more information you have to begin with, the better informed decision you can make for breeding. Not everyone is going to think the same on what is or is not important…