By Cat DiStasio
Medical technology advances faster than the speed of light, or at least that's the way it seems sometimes. These days, there are implants to treat all sorts of afflictions, and researchers are developing new medical devices that can help a person become a little more human than human. You can implant a bionic lens to get superhuman eyesight, get a tattoo to manage diabetes and -- someday soon, hopefully -- use a wireless device to control fertility. Read on for more amazing medical implants that can enhance your life in ways you never thought possible.