Originally Posted By: FlyPenFly
Just use automotive clear coat after a polish. Lasts years in my experience.
If you're doing your polish yearly, I would just use Meg ultimate compound, works well when it just needs a buff.
The problem with putting on a clear coat is that the lenses WILL still go bad again, and then the clear coat has to be removed before they can be repolished. It's much easier just to leave them uncoated and repolish them by hand every few months or so. This way you don't have to go through taping them off and using a buffer on them, which is both messy and time consuming....