Continue writing the next sentence.

How to remove scratches from plastic lens glasses
Clean the surface of your lenses in order to determine where the scratches actually are.
Make sure to use a cleaner made specifically for glasses and a clean micro-fiber cloth. You can get this at any eye glass store or optometrist's office.
In fact, they will probably give it to you for free if you have bought glasses there. Apply scratch remover to your lenses.