Who wears glasses ?

[Caravan Monster]

Riding in the winter, with the cold air and damp atmosphere, it's a big problem for people who wear glasses because they fog up so easily. When I was younger, I could get away with taking off my glasses on tougher terrain, but as the years pass and my sight deteriorates, my vision is no longer good enough to pick lines without the help of my glasses. This problem ruined what should have been a good day trailriding yesterday (it was snowing a little) and I am now set on finding a good solution.

Fog is caused when the air temperature cools the surface of glasses. The warm, damp air of exhaled breath is either blown back on to the surface, or else deflects off the chin piece of the helmet, and the warm air instantly condenses on the surface of the glasses.

I'm going to try wearing a trials helmet and see if that helps. Ideally, I would like to be able to wear goggles over my glasses.

Has anyone else had experience of this problem ? Any successful solutions ?