If you wear glasses on the slopes, you'll want goggles specifically labeled as OTG (Over-the-Glasses) compatible. Regular goggles — even large ones — often don't have the internal space or design features to accommodate frames comfortably. OTG goggles are built with deeper frame channels and notched temples that give your glasses arms a place to sit without pressing into your head.
The bigger challenge with wearing glasses under goggles is fogging. You're essentially wearing two lenses, so warm moisture gets trapped easily. Quality OTG goggles address this with enhanced ventilation systems that keep air moving across both your glasses and the goggle lens. Look for anti-fog coatings on both surfaces.
If fogging remains a problem or you want a cleaner setup, consider prescription goggle inserts. These clip inside the goggle frame, giving you corrected vision without the hassle of wearing two separate pieces of eyewear. They're especially popular with riders who find glasses uncomfortable under a helmet.