Contact Lens That You Can Control by Eyeballs
Scientists have developed a robotic lens that is controlled by small eye actions, together with double blinks to zoom out and in.
Most soft robots are controlled manually or pre-programmed, however. The lenses mimic the natural electric indicators within the human eyeball which are active even when the eye itself is closed.
Researchers from the University of California San Diego harnessed this natural charge to control the lens.
They measured the electrical potential of the eye – known as the “electro-oculographic signal” – and then made lenses that might reply to that activity.
Lead researcher Shengqiang Cai from the university instructed New Scientist: “Even if your eye cannot see anything, many individuals can still move their eyeball and generate this electro-oculographic signal.”
The lens is made from polymers that increase when an electric current is applied.
It’s controlled utilizing five electrodes surrounding the eye which act like muscles. When the polymer turns into more convex, the lens effectively zooms in.
Scientists hope one day, this might help create a prosthetic eye or a camera that can be controlled utilizing eyes alone.
“The system developed within the present study has the potential for use in visual prostheses, adjustable glasses, and remotely operated robotics sooner or later,” researchers wrote within the paper printed in Advanced Functional Materials.