Rinse the lenses with lukewarm water to remove dust and debris
Add a drop of mild dish soap and gently clean with your fingers
Rinse again and dry with a clean microfiber cloth
Check whether the scratch is on the lens coating or the lens itself
Use an eyeglass repair kit if the scratch is minor
Apply a small amount of non-abrasive glass polish only if the lenses are plain glass and the manufacturer allows it
Avoid toothpaste, baking soda, vinegar, and other abrasive home remedies
Avoid using paper towels, tissues, or clothing to clean the lenses
Replace damaged lens coatings by having the lenses professionally resurfaced or replaced
Take the glasses to an optician for deep scratches or distorted vision
Replace the lenses if the scratches cannot be removed safely
Use a hard case and microfiber cloth to prevent future scratches
Store glasses with the lenses facing up when not in use