Smith Turbo Cam's are the best goggle in the world for this.
I wear glasses under the goggles, and i too had tried everything going to stop the fogging glasses/goggles. I must have spent hundreds of pounds getting it right. It was last year i bought a pair of these and they work brilliantly.
They are not cheap, mine were £150.00 from Snow And Rock. No British shop are doing them this year, or none that i have found, but they are still available abroad.
A lot of the very early models didnt last long, the fans burnt out, and therefore people have shyed away from them, but they uprated the fans a few years ago and i have used mine for over 2 months on snow, and twice a week, every week at a snow dome, and mine are still working fine.
I assure you these will do the trick.
Regards,
Andy
Dry Slope Ski Directory