I have Post-Herpetic TN. I take 100 mg Lyrica three times a day which helps. Also use drops for dry eyes. I still have constant eye burning and/or aching. It's really bad when I'm on the computer too much, or try to read, or watch tv. I want to know what has really helped everyone with eye pain. I was thinking of asking my eye doctor for some drops instead of adding more medicine to the mix. My eyes are extremely sensitive, a few years ago I was given several drops (I forget the names) and the burning was worse than without them. Thanks!
I also have issues with my eyes burning and hurting. I recently tried wearing contacts and even thou I could see better, they caused so much irritation to my eyes I had to stop. I have not considered my eye issues part of TN systems, I just thought it was allergies. I currently use Bausch & Lomb Opcon-A Allergy relief once or twice a day.
One of your TN nerves goes right above the eyes, another around it (if I remember correctly). You might want to join the "eye" group on this site. It definitely could be eye pain from the TN.