You should absolutely say something to the breeder. They need to know that the problems are there.
As for the eyes, I would have a veterinary ophthalmologist examine your dog for a definite diagnosis. This person should also be able to tell you how much of his sight is affected, and how to...
I have several "alpha" females who will mark over the boys' marks...since they necessarily have to squat, they sort of cock one haunch to get the job done. :) Kind of funny looking, but where there's a will....
Sorry, don't have any video to contribute.