Keisha, I've had a dog that lost an eye, and one of my current dogs (Melvin, my Golden Retriever), has a seizure disorder. As far as the eye thing goes, as tragic as this is that this is happening to him (and preventable...personally, I'd sue the socks off the vet that CAUSED all of his trouble by giving him the wrong treatment...that's serious negligence on his part), if your dog loses an eye, it can be a relief to him in terms of pain. A one-eyed dog gets around just fine, and while looking at your dog with only one eye takes some getting used to, he'll probably recover nicely from it, and go about his business like nothing ever happened, once the stitches have healed up. I hope it doesn't come to that with your dog, but it definitely happens to many...praying for you and your poochie.
Our Melvin isn't on any seizure meds at this time, as he doesn't have them often enough to justify it right now...although the older he's getting, the more he has. Eventually, we'll probably have to medicate him for the seizures, as I can see it getting worse in the future.
Take care, and I hope your dog comes through everything just fine.