I have visual symptoms on and off since I was diagnosed. I get eye pain, blurred vision, and nystagmus. The jerking eye movements are really annoying. For me, it's as if my eyes are in some sort of spasm. I also have a blind spot in my field of vision. When looking at someone's face, I don't see part of their left face when looking out of my left eye. This comes and goes for me. It is mostly my left eye that gives me trouble.

Vision issues can be related to optic neuritis and cerebellum lesions. I've only had one documented case of ON but have had a lot of issues due the lesions in my mid brain.

Heat really increases this symptom for me. When I get too hot, my vision goes blurry. Once I cool down, things return to normal.