Scientists from the University of California, San Diego, have created contact lenses that lets you zoom in or out in the blink of an eye. The lens can be controlled by your eye movements.
The Scientists measured the electrooculographic signals generated when eye makes specific movements – up, down, left, right, blink and created a soft biometric lens that directly responds to those eye movements. Even if your eye cannot see, many people can still move their eyeball and generate this electrooculographic signals. The researches programmed the lens to zoom in when the eye blinks twice. Another two blinks the lens will zoom out.
They figured out that the electrical potential between the front and back of the human eyeball changes when the eye is closed and used it to control the lenses. The relative change in focal length can be as large as 32 percent because of the soft material used in the lens.
The researches believe that it could be used in visual protheses, adjustable glasses, and remotely operated robotics in the future. Scientists hope one day this could help create a prosthetic eye or a camera that can be controlled by the eyes only. It could also be used to help people with disabilities control robots and machines. But I think it can do more than that and we will get to know that in future. There is no information that when it will be available.