Repolishing will remove any coating which you had, maybe UV protection, or anti-scratch, though the latter wouldn't seem to have worked anyway.

As they sound about unuseable as they stand, what is left to lose? A metal polish would be my first choice, and probably finish off using toothpaste. Above all keep checking on progress.

Might be worth checking with a local optical lab if you have one. They probably have the means of refinishing the lenses, and it ought to be cheaper than new ones.