I have prescription glasses and also prescription sunglasses. I take my headsets to the opticians to try to be sure they're comfortable and to sure that they seal. I use Peltor, standard Davy Clark and a Davy Clark that I've modded with a Headsets Inc ANR kit. I don't have any problems with the ANR or seal on any of these. I do find Lynx headsets a bit uncomfortable after a while, but use them so infrequently that I don't worry about fixing it. The secret is in trying glasses with the headsets from the outset.