Rinse the lenses with lukewarm water
Add a drop of mild dish soap and gently clean with your fingers
Dry with a clean microfiber cloth
Use a lens-safe scratch remover if the lenses are glass and the coating allows it
Apply a small amount of non-abrasive toothpaste to the scratch and rub gently in circular motions
Rinse thoroughly and dry with a microfiber cloth
Mix baking soda with water to form a paste and rub gently on the lens
Rinse thoroughly and dry with a microfiber cloth
Use a glass polishing compound designed for lenses
Follow the product instructions carefully
Replace deeply scratched lenses
Avoid using paper towels, tissues, or rough cloths
Avoid abrasive cleaners, ammonia, or vinegar on coated lenses
Take the glasses to an optician for professional polishing or replacement