I’m not sure peripheral vision needs training, it is a reptilian connection. If something comes at out in the field of vision your body will react before you have time to think.
If you meant trying to state at the center while trying to discern info not in your central field of view that seems more like an attention shift than vision improvement
If you have the budget Siemens NX CAD CAM FEA runs on Linux (Redhat and SUSE, also works on OpenSUSE). However the GUI version is NX 12 or prior releases, newer versions are headless…maybe that will change with Linux Desktop gaining percentage steadily