Stop glasses from fogging while hunting?

[tanner]

I hunt pretty much every animal in Iowa and the weather can get pretty cold so I wear a face mask a lot, but my glasses fog up from my breath. Should I try cutting bigger holes for my nose and mouth? Or do you know of any thing to put on lenses to work as an anti-fog? Any advice (besides telling me to get contacts or lasik) is appreciated

 

[WilliamG1]

Buy an anti-fogging agent from a snow ski supplier. Skiers use anti-fogging stuff in their goggles all the time.

 

[crow]

Use SCBA anti-fogger. Works great for firefighters, so it'll work fine for you. It can be bought at Wal-Mart with the most common brand being UVEX. Be sure to get the wipes, and not the spray because of the convience.

 

[BearCrap]

You can buy anti-fog spray at any camera or eye glass store. I treat all my optics this way and even use it on car and boat windows. I often have to wear glasses and live in a very wet area of Alaska where its cold and wet most of the year. There are many name brands that work. But I found anti-fog made for car windows can leave a build up on glass such as Rain-X. However the stuff made for fine optics I didn’t have that problem with.
Another thing that helps is use a neoprene face mask that has an opening for the nose and mouth but fits snug so your breath doesn’t go under the mask and out under the glasses. I have less problems with neoprene building up with ice around my nose and mouth than other fabrics and knit masks. Also that kind of mask block the wind better than knit masks.