I wear glasses and have dealt with this issue for years now. Here are some of my suggestions. I think one of the keys is the no fog type mask. I have a Polaris AF 1 helmet that works great for non fogging issues. If you want to switch over to a moto cross helmet, I just did that in the past month for a trip to Tog and tried out the KIM F4 this past weekend. I heard a lot of people say it would be cold and I was apprehensive about the goggles and the glasses fogging. The helmt was great temperature wise, even at night when it was about 10F. I was ditch bagging and trail riding, but it might have been too cold when traveling at higher speeds. The forehead was the only cold spot as it does not seal perfectly there. I could stick it out if I had to with the cold part. The fogging part with the glasses was even great. I bought the Scott OTG frame and used the Cat Crap on the eye glasses. It was just as good as the AF 1 helmet I have to admit. I was not doing any heavy boondocking, but I did dig out of some five foot drifts and heated up a bit and put the F4 back on and did not have any issues and figure that this is as good as it will get for a guy with glasses. I hear the L frames from Smith are a good choice too. Will know how well the F4 works when I go to Togwotee in mid January. Good luck since I know the fogging is very frustrating and can be compounded with eye glasses issues.