I found out this evening that my vet was wrong. My dog is NOT blind. She can still see a little bit. She does not have PRA but rather optic neuritis caused by some kind of infection which then causes the optic disk to swell. The veterinary opthomologist (VO) was a great guy. He talked to us for a while and then set up a little obstacle course which Keba slowly negotiated. Then he turned off the lights and she wouldn't do it. Then he did the exam. Keba has a referral to see a vertinary neurologist, hopefully tomorrow. The VO said that the neurologist would prob do a spinal tap, figure out what's wrong and then give her a shot of steroids and maybe something else. He also said that she should regain some of her sight but not all of it.
The VO smiled when I asked him if he knew Basenjis and then he said "of course I know Basenjis, I'm the eye man".
Thanks so much to everyone for your suggestions, ideas and good thoughts. We're not in the clear here yet. You all are wonderful. I'll keep you posted.