When your glasses get scratched up so bad, it’s hard to see especially at night. I find that this antiglare coating starts to deteriorate and makes the glass is even harder to see out of. Most of the scratches are on the outside of the lens. By giving a little pressure to the lens you can pop the lenses out and start to sand this coding off as well as removing the big scratches. I start off with 1200 grit sandpaper. I wouldn’t go any course or than this the sandpaper will remove the scratches and the coding. Toothpaste has very fine abrasions and it and will start to remove the haze that the sandpaper leaves on the surface. Then I like to take some 3000 grit sandpaper dry and remove the small little scratches. After that a good quality automotive polish wax will take the rest of the haze off. If this is your first time doing this I would recommend using an old pair of glasses to learn these processes. I wouldn’t use the pair of glasses that you depend upon. Hope you found the video useful