No you won't be able to tell anything. The tests are carried out by a canine opthalmologist and require special equipment - even a general vet can't do them.

IMO there is no excuse for not doing them regardless of whether they are having one litter or ten. It is irresponsible breeding.

An eye test only costs about £35 so I'm surprised that they haven't had that done, but have had hips done which costs around £150. Not only is there no excuse, but I'd also be worried that they had the eye test and the bitch failed, and are now saying it wasn't done. I also think 5 is too old for a first litter.

Obviously it's up to you, but personally I would walk away.