It's a glasses holder, a picture frame and a way to give cute specs to your favorite anime character, if that's your thing. Not that it has to stop at anime, but anime girl faces are provided. In typical Japanese literalist fashion, this item is called "Funny Trick." Or, depending on how you interpret Japanese, "Fannie Trick." You decide which works for you.
Now, I'm presuming that if you need a glasses holder, that removing them and putting them on a frame would make any image within said frame beside the point, as your glasses have to be removed from your eyes, and now you can't see your fetish in focus. In other words, you're going to want to buy multiples.
How long do you think it'll be before we get picture frames with pony ears or unicorn horns?