
It's a really grey area, especially as the results are only one person's opinion. Unlike the hips scores, which are estimated by a panel (even if only 2 people).
It's difficult to eliminate dogs from the breeding programme in those breeds with a small population (thinking about your Spanish Water Dogs, Diane).
Remember the much-quoted instance of Bedlington Terrier people trying to breed out PRA and ended up with copper toxicosis as well... similar thing happened with the Basenji - PRA - Fanconi's situation.
Nobody argues that glaucoma isn't anything except a horrid painful condition when it occurs, and we must try to avoid it. But in a condition which is inherited polygenically, you are never going to eliminate the predisposition entirely from a breed which is susceptible. If you try too hard, you run the risk of letting loose other conditions which you hadn't bargained on.
Difficult to tread a middle path.
Jo and the Casblaidd Flatcoats