I was on Topamax on very high dose, this was years ago. But, I noticed that just like overnight(that's how it seemed to me anyway) I had lost some vision. I could no longer read the guide on the TV.I called the pharmacist the next morning and told him what was going on, he told me to get to the eye doctor in town (we only had one), so I did. When I went in to see him I explained everything to him, he did a completely different type of exam. At the end he told me that it was the Topamax at that high of a dose that that's one of the very rare side affects of Topamax is vision loss. Check with your eye doctor as well as Google ALL of your medications to see if any of them have a RARE side effect that is vision loss. You may also want to talk to your pharmacist they are aware of all of the medications and SHOULD know the side effects of all of them!!
I joe this is helpful for you. 😊

I said it before a natural way to improve your eyesight or keep it the way it is now is eating carrots 🥕. The carrotine is natural and also a vegetable.

I've been on Topiramate for 7 months. Blurred vision and I've just got new glasses for reading and distance... I've stopped the medication due to the side effects of many things other than eye sight.

Nicole,you're right I remember going to the GP about something he said you can't expect everything to be related to EP

I'm more on oxtellar xr (which is the 24 slow dosing Trileptal) I had a problem with break through seizures on the Trileptal, I'm also on Trokendi xr(which is the 24 acting slow dosing Topamax but, I only take 200mg instead of 800mg that I was on. Wow...I couldn't handle that!!! I hope this helps some of you.
Oh, and after reading the side effects of Keppra (which am ER doctor recommended NOT my regular Dr.) I would not recommend this med. Just my opinion though, if it's working for you keep taking. Like I said that was just my opinion. I take about 10 medications and so I have to be careful about interactions.
Have a good day everyone.