Topamax has been linked to a certain type of glaucoma (a buildup of pressure that causes nerve damage).
It should go away when you stop using Topamax. But, if you let it go too long, it can lead to permament damage.
I'm guessing that the reason your doc was dismissive is that:
1. The number of people who were affected *while* taking Topamax (not necessarily *from* Topamax) was so small that it was just barely relevant. At the time the FDA issued its warning, something like 850,000 people had been given Topamax, of which 23 developed the condition.
2. The condition seems to go away when the drug is discontinued.
In other words:
1. You aren't likely to get it.
2. If it seems like you *are*, the drug can be withdrawn.
I don't know how much you're taking (the drug is used for a number of conditions, with different dosages and different frequencies of administration), and even *that* information might not be relevant.
In short, if it bugs you, and if you really think it's serious, then be very firm about wanting to get checked out. You're probably fine since, as you said, you "seem to be OK now," but if it comes back, then schedule an appointment with the doc and get checked out.
That's my advice, anyway...