Contact lenses zoom in on distant objects with a double blink

Joanna Estrada
July 30, 2019

This lets the lens zoom in on something just by blinking twice. Speaking of robots, scientists have created a robotic lens that allows users to zoom in by blinking eyes. Researchers from the University of San Diego are talking up the new contact lenses that leverage the natural electrical signals in the human eye that are active even when the eye is closed.

Scientists at the University of San Diego have shown off this sort of contact lens before.

"Even if your eye cannot see anything, many people can still move their eyeball and generate this electrooculographic signal", added Cai.

The researchers claim that they can use the electrical potential of the eye to control eyeglasses, cameras, or any other type of optical device, including remote robotic cameras.

The scientists created the device with a polymer that changes its shape using the electro-oculagraphic signal harnessed by five electrodes set around the eye. The lens can be controlled by your eye movements. This is done by stretching the soft lens material - like a muscle - to become more convex, thus zooming in.

Although further development is still needed, in the future, researchers indicated in the study that the new technology could also be used in "adjustable glasses and remotely operated robots".

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