There are a variety of open-source 3d-printable adapters to mount glasses within full-face respirators. I use a version of this design with my 3M 6000-series an

There are a variety of open-source 3d-printable adapters to mount glasses within full-face respirators. I use a version of this design with my 3M 6000-series and an old pair of lenses: https://www.thingiverse.com/thing:4672869 https://www.thingiverse.com/thing:4672869