Thanks for your reply. Boston is balmy compared to what youse got in Minnesota. See my discussion:

As a prescription eyeglass-wearer I have the added problem of eyeglass as well as goggle fogging. IMO, so called "closed" goggles have never been sealed enough to completely keep out moisture, which then might fog up the eyeglasses, so you have to stop and clean the spectacles separately. Furthermore I think even the anti-fogging agents can also be overcome by heavy, moist exhalations,

In my discussion, I wrote that cycling, especially vigorously, as when going up hill produces an unusually heavy burden of exhaled warm moist air, and we have less onrushing air passing our heads than a downhill skier or a snowmobiler, Nonetheless there is enough, but has to be produced by our own expended forward progession. Unfortunately as we ride uphill we expire more but go slower; and when going downhill we don’t breathe as hard, but have plenty of orushing, ventilating wind.

Also YMMV with terrain and temperature, so I plead with those who enthusiastically endorse their solutions to the fogging problem to describe their cycling conditions.

Finally, my safety goggles, unlike ski goggles, have those rigid earpieces to support my favored eyeglass-mounted mirror. Also with the Velco suspension, the goggles rest comfortably on my head without a compressive headband.