This one is just bells and whistles, as far as I'm concerned. I had to have it removed after paying the extra – fingerprints or smudges actually show up better, and if any of these are on the INSIDE surface of the lens, they would actually interfere with clear vision and drive me kinda nuts. I wanted BETTER vision, not WORSE vision. When I took them in to have the coating polished off, my optometrist said he'd had a few other patients with the same problem.
From outside the lenses, it is a pretty, jewel-like effect, though – just a delicate suggestion of green or purple sparkle, depending on the light and the angle. And if there are no smudges, people probably can see your eyes just a little better.