These are non-prescription blue light cut glasses purchased from Havealookshp. I've used them once or twice for 30 minutes each time. There are no noticeable scratches or stains. Due to the blue light cut, the field of vision has a slight yellow tint. They are fashionable and stylish. I am also selling a different color, light blue. Photos 3 and 4 show the light blue version, but the item for sale has yellow bars. Please consider them.