Scientists at the University of California, San Diego have developed contact lenses with double optical approximation. Their peculiarity is that the user can independently control the scaling using the eyes. To see information in the distance, you just need to blink twice.
New contact lenses are able to change the focal length on a special team — you need to quickly blink twice. To achieve this result, scientists have measured electrooculographic signals generated by the eyes when making certain movements. They then created a soft biomimetic lens capable of reacting to electrical impulses. After receiving the appropriate signal, it changes the focal length, allowing the user to better see objects in the distance.
The researchers believe that in the future their development can be used in prostheses, smart glasses and robotics with remote control.