glass Glasses? or the plastic kind..
there are "polishing Kits"

glass or plastic?

Use the same stuff that you use to eliminate cracks on windscreens

headlight lens restorer MIGHT do ti OR fuck em up!

its almost impossible believe me ive tried the best i came up with was lighter fluid ,🙃

glass or plastic lenses
if thelater, there is a cheap fix

Cerium oxide.

nothing really works. a few years ago some outfit was selling acsupposed repair liquid that you brushed on. They had to stop selling it because it didnt really work.

Sadly, ain't no way. I've worn glasses longer than you've been alive. They are an expensive and unrecognized prosthetic device, with no way to repair them other than replacing them.

Buff them with silicone putty and a soft terry cloth is the only thing I know of.

Spray them with black spray paint
Then bake them in an oven on 350 degrees for five minutes