Brass/Silver Polish
This is another method you should NEVER use on glass. It will, however, work on plastic lenses. Use a cotton ball to wipe the metal polish on and buff out scratches. Use a cloth to remove excess polish.
Petroleum Jelly
Place a thin coat of petroleum jelly to your lens and use a cloth to polish it in circular motions for 10 seconds. You can repeat if you need to. Use some water and a fresh cloth to remove the excess jelly.
Furniture Spray
Spray your eyeglass lenses lightly with furniture spray, like lemon Pledge. Use a lint-free cloth to rub the lens in a circular motion until your scratch goes away. The only problem with this method is that you may have to repeat the process every few days.
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