glasses?

[aed]

how can i repair a scratch on my glasses

[Whickerman]

If it's a light scratch, your optician may be able to polish it out, or send it to the manufacturers who can. If it's deep, you're probably stuck with it.

[bigelaine]

I have taken light scratches off my watch face with toothpaste before, I'm not sure if that would work with your glasses.

[qapmoc]

You can polish out scratches from glass with many different types of polish as per the toothpaste/watch mentioned. However, your glasses have a precision ground curved surface and if you polish out a sratch by hand you will probably affect the curvature and get very odd effects when looking at things. best to take it to a pro for help.

[heathfield]

Be aware, too, that if the lens has a coating, such as anti-scratch or anti-reflective, trying to polish out the scratch will remove, or at least damage, such a coating.