Clean your glasses the right way and avoid scratches
/You want to avoid using your shirt, or any clothing in general, for cleaning your glasses. Fabrics usually contain dust and small debris, especially the ones you’ve been wearing all day long.
Dust and debris can leave deep scratches in the glasses themselves, and you can’t get rid of scratches that easily sadly. It’s best practice to stop using your shirt to wipe your glasses off and do it the proper way. The best method is dishwashing liquid and water.