I have expounded before (at length! verbose, much?) on my opinions about prescription eyewear. I still maintain that your very best bet is a small, independently owned optical shop. However, I was chided in comments and by email that some of the discount internet-order places are really quite good.
So, I’m amending my position (slightly). By all means, buy your sunglasses or your back-up pair or—in the case of those of us with small children in specs—your kid’s emergency pair from this place without too much worry. And so long as you’re doing that, why not get the best deal? Use coupon code Winter10 to take $10 off your total purchase. Coupon is good through March 15th, 2007.
(And no, not all of their glasses are $39. But most of them are. I guess mostly39dollarglassesexceptforthegooddesignerstuff.com was already taken.)