We noticed the coating on my wife's glasses was starting to bubble, then peel and flake off.
Just from gentle cleaning with a microfibre cloth...

I've got no confidence in the durability of plastic lenses,
which is another reason I've stuck with the same glasses since approx 1996...

I need a pristine lense with no scratches or blemishes,
or aberations..
As far as I can see, that'd still be optical glass...???

If it's still available at a fair price...