Sorry to hear about your dog.
“Can a blind dog have a decent quality of life?”
Do you keep your dog inside or outside ?
If outdoors does he have a small kennel or the full run of the yard ?
It will take a little work and dedication from you.
If he is indoors have his designated area and don’t move furniture around or place anything different or leave things (obstacles) laying in his area.
When he has to go out (to potty) take him the same way (same path) each time- with no obstacles, into his designated area outdoors.
Preferably into a small kennel, again with no obstacles. Try to keep his routine the same each day with out placing anything out of the ordinary in his path or areas.
I’m sure sunlight is no problem where you live, have his outside kennel to where he can soke up the sun.
Dogs along with horses are a “creature of habit”, he will do fine, as long as things stay the same for him, day to day.
It is real important that his world stays the same, that’s where your dedication comes to play by making sure nothing changes in what he is used to. If he can still see some what, go ahead and start establishing his areas and habits now.
After he is settled in and more used to not seeing, you will probably be fine at taking him out for walks and such but remember all his trust is in you, don’t lead him in to an awkward situation.
Give him lots of TLC….
“Should I call the AKC registered kennel and bitch?”
It probably won’t do much good except make you feel a little better. I would probably let them know about your circumstances. A “bad gene” can be carried for several generations before showing up. They probably had no idea and their breeding was on good intentions or at least I should hope so….
Best of Luck
Robert