I'm told the JT Flex is pretty good for putting eyeglasses under. Although I don't know any mask that's designed specifically to have glasses under them other than the "mounts" available that you can put the loose glasses lenses in.
If you find some holler at me, I'd like to know too since I've started wearing my glasses more and probably need to play with my glasses on now. Although I'm assuming the best way is probably getting something that has the space like the JT Flex and if it doesn't fit just cutting the foam out a bit or replacing the foam for for better fitment with glasses.
ಠ_ಠLess QQ more Pew Pew
READY TO >> RACE