My insurance company wouldn't approve Lyrica, and I'm kind of glad. The gabapentin was only $18 for a month's supply, and it's also much cheaper than the Trileptal I was taking until it stopped helping. I haven't read as many scary weight-gain things about the gabapentin, either.
The neuro-opthalmalogist says if the gabapentin doesn't help, there's nothing else she can offer, and I should see my neuro for pain management. I go back to the neuro in a couple of weeks for my MRI/MRA/SSER results, so maybe it will have kicked in by then.