Can Normal Glasses that You Wear Used as Magnifying Glass?

Can the lenses of the glass we wear be used as magnifying glass? I'm looking for something like DIY magnifying glasses. If you know how to make them, can you please tell me? Or can you think of something else that can be used as magnifying glass? I want to make an iPhone projector. I think it's a really cool project. Here the link: http://content.photojojo.com/diy/turn-your-phone-into-a-photo-projector-for-1/

Sorry, prescription lenses won't work for this project. (Yes, I checked out your link and think it's cool!) You'll need a real honest-to-Pete magnifying glass. If you can get to the dollar store in your area, they probably have them.