Also Iris to Iris PPM is acceptable in a CERF Exam. (one or two strands). My Franie has that… D3a-Iris, persistent pupillary membranes- iris to iris
I would agree with Clay that it could be a type of corneal dystrophy, which is why I asked if there had been blood work done because high cholesterol can do that (formation of deposits). I have a bitch from my litter in 2000 that had that. The spot showed up at about 2yrs.
PRA (which is what Sonny has) is typically late onset (I know that Sonny's was really early) but usually around 5yrs.