How do you purchase eyeglasses?
I've always been one to get my eyeglasses wherever I get my exam (Lenscrafters, etc.), but I'm wondering if I couldn't do better by using my prescription to making the purchase online. Are any of you doing this? Is it cheaper or not worth the trouble? Any favorite sites? What got me thinking about this is that I heard today that an app will soon be available to allow you to have your eyes examined via your smartphone.