it's the breeze that's wrapping around the glasses to your eyes. you need better coverage. I'm hard pressed to make any suggestions cuz I don't wear glasses myself. however I believe the resounding consensus last year was for ski goggles. last winter I wound up staying with my racquetball glasses with a head strap over a 3 hole face mask. don't feel bad if you're challenged to get your eye protection hammered out. it's a challenge for every winter rider. here's a pic of me with skydiving goggles which turned out to be a bust due to fogging because they were sealed too tightly. I actually needed some breeze to blow by and across the inside of my glasses to keep them from fogging.