Another suggestion ....... you can ask a breeder if you could just visit to meet them along with their dogs, preferably before they actually have any puppies
this gives you & the breeder time to discuss any questions & a good breeder will no doubt want to ask you about your plans for a puppy, along with questions about your family/home etc...
if you are not comfortable/happy with the set up then you can just walk away without any cute little puppies tugging at the heart strings.
Regarding the health tests, i would be looking for Optigen PRA with results of either clear/carrier but not affected. FN as not affected. KC/BVA eye tests not affected. I think another poster mentioned although the tests will now be coming obligatory for accredited breeders you still need to check the results. Imo it is totally wrong to breed from an affected dog.