
The freind whose bitches failed gets very cross when she sees eye tested clear, and they have not been done for years.
In breeds where there is variable age of onset for any eye condition a current eye test is one under 12 months old.
Breeders in my current breed are expected to have a current certificate of under 12 months at time of mating, so in practice bitches are tested when over a year, then any time they are to have a litter, and usually at over 7 to check final status. A stud dogs get done more often to ensure they have a clear cert when they are aproached by bitch owners.