I have Uthoffs as well. during heat waves, or prolonged exposure in overly warm areas, or even over heating due to exercise can make my vision go wonky. I am one of those that goes nearly blind if I try to run.

I agree, new glass wont fix ON, but a visit to the eye guy is needed if you think you are in a flare with ON. That is the one thing I will take steriods for. I dont wanna play with my vision.