Anyone who wears glasses will like this Great Discovery: www.ZenniOptical.com. What's so great about it? It's more than just a place to buy glasses online. They've got a *LOT* of frame styles to choose from, including a bunch of good looking frames for only $8.
They do the standard types, single vision lens, sunsensor (potochromic)lens, tinted suglasses lens, bifocal lens and progressive lens. The reason that they can sell 'em at such low prices is because they only sell direct to the customer. There's no middlemen or retailers jacking up the prices.
I've seen offers to buy glasses online before and I am not a hamster, if you've got an email account you've probably seen some of those spamvertized offers yourself. The difference here is that ZenniOptical.com is a legit company doing business directly with the customer.
After you've had your eye exam at the eye doctor of your choice, you get a copy of the prescription, find the glasses on their site that you want, fill in the prescription details and hit "add to cart" when you're done.
The order page is filled with help buttons to answer any questions you might have while ordering so that you know what information it's asking for. If there's any questions or problems, their contact page has a contact form you can fill out on the website, an email address and a toll free phone number.