I checked with the optician who stripped and recoated my polycarbonate
glasses a while back and learned that that isn't being done any more
because the stripping process can produce ripples on the lens surface.

I asked about using windshield scratch filler/remover products and he
thought that /might/ work short-term, but would probably not survive
much lens cleaning.

--
Morris Dovey
DeSoto Solar
DeSoto, Iowa USA
http://www.iedu.com/DeSoto/