So I'm sitting inside, and outside it's freezing rain with a wind chill of 15f. I'd say that is cold, now add you riding along at 15mph and the temperature is even lower. A friend of mine the other night was showing off his fancy ski goggles, I sort of made fun of them. Later that night I was bombing down a hill and lost the vision in my left eye due to tears and them freezing.
So I went to a discount chain he had suggested(Marshall's) and picked up a pair that fits over my glasses and enhanced color contrast, $10! If you are are like me and live somewhere there is winter you should try this out, it's very cheap and works great.