[As Seen On TV] "Liquid Lens" repair kit... any good?

[PaladinX13]

Has anyone tried this on their glasses or optics (watch faces, etc)? I try to keep them scratch free, but accidents happen... if you've used it, do you think it would work on a scratched scope?

[DougCxx]

I wouldn't even bother trying it on anything that had an optical coating, and that would include just about any scope I would buy.
And a lot of glasses have antireflective coatings now too.
It could turn a small scratch into a much worse problem. Watch cases might be worth it. Car windshields, perhaps?
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