Blink twice, zoom in. Shengqiang Cai, a professor of engineering at the University of California, San Diego, and his team, have began filing patents for a new contact lens that allows the wearer to change the focal length of the lens with a double blink. It's still early days for this new technology, which The Smithsonian reported on earlier this week, but the potential of this research is an exciting development in the intersection between technology and eyecare. Head over to The Smithsonian to hear more from Cai about how these contact lenses work, and where they could go in the future.