Originally Posted by
noglider
I get my prescription glasses in a large frame so it cuts the wind.
+1 Mine are not a particularly large frame but larger than average. I get some eye watering, but not enough to cause visibility/control issues. I also get some fogging, only at stops, but IME the fogging dissipates after a few seconds of riding and does not interfere with riding safely.
I avoid riding in the coldest of days so I can only claim my technique works down to about 0 to -5 degrees F. Addendum: I'm riding 5mi or less at these temperatures. More only in the 10F+ range.