Researchers have made a robotic lens that is controlled by little eye movements, including double blinks to zoom in and out.
Most delicate robots are controlled physically or pre-programmed however lenses mimic the natural electric signals in the human eyeball that are active even when the eye itself is closed. Researchers from the University of California San Diego saddled this regular charge to control the lens.
They measured the electrical potential of the eye – called the “electro-oculographic signal” – and then made lenses that would respond to that activity.
According to New Scientists: “Even if your eye cannot see anything, many people can still move their eyeball and generate this electro-oculographic signal.”
According to The Independent: The lens is made from polymers that expand when an electric current is applied. It is controlled using five electrodes surrounding the eye which act like muscles. When the polymer becomes more convex the lens effectively zooms in. Scientists hope one day this could help create a prosthetic eye or a camera that can be controlled using eyes alone.