Zoom in and Zoom out with the blink of your eye: The future of contact lens is already calling, Details inside

Scientists have invented a new soft lens, which is me from saltwater and one can control simply control it by eye movements. Scientists have also measured electrooculography signals when you make specific eye movements after having se lenses on. y respond to electric impulses that your eye movements generate.

se lenses change ir focal length depending on electrooculography signals it generates and accordingly, users can zoom in with blink of an eye. Scientists have created a new robotic contact lens that users can easily control with small eye movements. For example, you can zoom in and zoom out by blinking your eyes twice.

Interestingly eugh, it mimicks natural electric signals present in human eyeball since re is an electric potential between both sides of eyeball. When re is an eye movement, lens measures electrical potential. se natural electronic signals in human eyeball have necessarily helped scientists develop lens.

Scientists hope its future applications could be many, right from bionic, eye-controlled cameras to prostic eyes or as a smart eye-wear to act as tiny biculars.

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How it works

Researchers have programmed lens in such a way that you can zoom in with two blinks. Two more blinks and lens would zoom out.

“Even if your eye cant see anything, many people can still move ir eyeball and generate this electro-oculographic signal,” Shengqiang Cai, co-author of paper that was published in journal vanced Functional Materials earlier this month, told New Scientist.

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Scientists hope it could also help people with disabilities control machines and or robots.

What goes behind techlogy

Scientists explain lens expands when electric current is applied. Five electrodes surrounding eye provide electrical current. When lens seems movement, it zooms in. This way, future users could zoom into any object for clearer vision and all y need to do is simply blink at those objects..

As mentioned, scientists have also measured electrooculographic signals eye movement generates. For example, up, down, left, right, blink and double blink. This way, this bionic contact lens responds directly to electric impulses and it changes its focal length depending on signals.