I wear my contacts all the time. I'll never take my glasses in the field (I don't take them anywhere) but I remember when I was about 12, it was really coldand my glasses fogged up and I missed some geese that were flying over. I vowed to myselft that woud NEVER happen again... and it hasn't.
ORIGINAL: Copper31
For the rest of you who don't wear glasses I would highly recommend getting a pair of safety glasses to walk to and from you stand in the dark. I learned he hard way and now I never enter the woods in the dark with out them. You may think it is stupid and I have had guys poke fun of it but without my eyes I can't shoot a bow.
Great advice copper, I do the same.