No worries Nemo, I have a boy with corneal dystrophy too. He had it show up in one eye at about 2yrs and a year or so later the other eye had it too. He is 7 now and no changes. I have also talked to a breeder vet who thinks it's food related. But her recommendation of switching to Euk was not on my list of approved foods. lol I have fed all kinds of different foods over the years and haven't seen them make a difference. Also fish oil was recommended, as a potential imbalance in the omegas could be a leading factor too. But no luck there either for me. It doesn't affect the vision, so Nemo won't notice anything.
His kinda look like thin short lines or scratches across the eye, which actually was my first thought when I saw it. The eye doc did say it could be caused by injury too and I thought maybe that's what did it since he is, well, a goof! But when the other eye turned up later, I figured it was probably more of the food or other explanation than an injury coincidence. lol Who knows!
I'd certainly be willing to try other stuff though if anyone's found a better secret recipe!