Just watching this on playback watching the Terrier group. Half of them can't see because of the long hair over their eyes. eg wheaten terrier. 40 years ago I'm sure this wasn't the case with those breeds. I mean they were hunters of vermin - they wouldn't have got very far with hair in their eyes not being able to see where the rats were running!.
We got a dog when I was about 8 and I remember looking at that time at a dog breed book that my dad had had when he was young. It must have been from about 1950. Even then, in the 80s, many of the dogs in the book looked very different to the supposed "breed standard" of the 1980s. It just seems to have got worse over the years.
I know this is commented about every year, eg the brachycephalic dogs, the ones with folded skin, or the sloping back of the German Shepherd. But I thought that the Kennel Club and breeders were more enlightened these days. I'm not so sure....