Contact lenses that zoom when you blink twice are now available

What many thought was impossible has been made possible by scientists at the University of California San Diego.
The scientists have made a contact lens that can be controlled by the movement of the eyes.
It can zoom in just by blinking twice.

Specific eye movements —blink, double blink, up, down, left, right — often generates electrooculographic signals; these signals were vividly studied and a biometric lens, that do respond to such electric impulses, was created by the scientists.

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