This is just way kewl. In brief: researchers are working on a retinal implant that would act like a digi-cam and stimulate nerves on the retina, allowing people with macular degeneration and similar eye diseases to be able to see again. This one is different from others because it doesn't require an outside assist (from, say, a digi-cam embedded in goggles). They're also talking about being able to replay and slow-mo things you see! Wowzers!