Nags (& Corey) there are several products to prevent fogging of your glasses. One such product is called "Optic Guard" and it works well. Thankfully, I had Lasik surgery in 2000 and went from LITERALLY not being able to see the "Big E" on the eye chart to having 20/20 vision so I don't wear glasses anymore. But prior to that I used to use similar defogging stuff for my snow shoveling days (I don't have to worry about that anymore either after moving to Tucson, lol.). I still buy the stuff once in a while because it works great on my glass tube style candy thermometer.