Can You Turn Lens From Regular Sunglasses to Prescription Lens?

Yep. You can send them to www.optical4less.com. They are an online eyeglasses store and their services are really cheap. Cheaper than any local stores you can find. It's perfectly safe to do so because O4L is a trusted store. I've been using them for a while now, buying lots of glasses and each time they have satisfied me. It is quite worth it because with the money saved I bought a new ps3. Try it, you won't be disappointed. If you need any help just contact their customer support, they are really friendly as well.

You can have an optician put prescription lenses in sunglasses.

In some cases, you're better off having the original manufacturer do it if there's something unique about the quality of their own lenses, too.

omg if ue gonna buy em us dot waste ur parents money! what r u 10? u get get really pretty replica ones for five dollars at like wet seal and charlott rouse! and they've 100% ultra violet pertection just about all shades do!