Sunglasses vs contact lenses

...which is better for the environment? An article on Slate http://www.slate.com/id/2240634?nav=wp discusses the measurable-ish factors. Somewhat interesting, but I'm still wearing contacts. I'd have to add more skin care products if I wore glasses-- I always had Tzone issues when I wore them. Of course, I could get Lasik. Okay, I could get evaluated for it; I've been told by the optometrist that I'm unlikely to be a good candidate. I'll talk to R after he gets his done.