Are there any relatively cheap masks/goggles that could fit over a decently size pair of glasses?
Can you wear these on the field?ESS Land Ops. If they can fit over GI glasses, they can fit over whatever you have. Plus, since they're surplus, they can be found for around $30 or so for a pair with both clear and tinted lenses, a storage bag, and cover for the spare lens.
Why would I be recommending them if you couldn't?Can you wear these on the field?