I wonder if it's truly vision loss. The griff would seem to run into things blindly but I really didn't think her brain was working at the time. It was on auto-pilot in that post-ictal phase, and if something was in the way, she ran into it. When our Maddy got sick, she didn't have seizures that we were aware of, but one of the symptoms of her brain illness was that we through she lost sight. But after the vet visit, the vet determined the eyes were working but the message wasn't getting to the brain properly. Whatever was wrong, we let her go 6 weeks later.
I hope you guys get some answers. I would never have wanted to lose Wrigley, but those seizures are the worst thing ever I think in all of the dog illnesses out there. We haven't experienced cancer but the being on high alert 24 hours a day every day was HARD.