Pannus can be controlled for life an no fear of being blind in 5 years. It is a shock and a pain but easily controlled with daily drop of prednisolone and touch of OptimmunePannus blindsided us and our 2 yr old GSD. She was purchased from a very reputable breeder in Toronto that bred his female with Toronto area studs from other highly rated breeders. We looked at hips and elbows, choosing dogs with German grandparents (that rate joints) with the highest ranked joints etc etc. There was never any mention of pannus and wasn't on our radar. Now it was caught very early as she injured her eye doing some agility training and it's only very very small.... but very worrying that she could be blind in 5 years???
Honestly, if I was ever to buy another GSD... not sure as pannus is so widespread (but we really love our GSD). I would have to get Pannus checked somehow perhaps asking the breeder to pull back the eyelids of mom and Dad and physically check them out myself. It's actually that easy as at the start it hides sometimes just out of view on breeding age dogs so I've been told (vet) but being what it is that really doesn't guarantee anything.
Anyway, we have goggles and use drops daily to get a jump on things but very annoying as we were planning on breeding her..... she has perfect joints, is deep red and smart.
Called the breeders that have her lineage and they were dumbstruck that we would have pannus in our dog???? but there is that fine line between being reputable and losing your shirt if word got out that it's their genetics versus me being irresponsible and walking her during the day??