A new smart contact lens could let diabetics* monitor their own glucose* levels with the blink of an eye.

Experts say the soft, flexible contact lenses detect sugar levels in tears and delivers the results through the lens display.

This alerts the wearer if their levels are too high by turning on a tiny embedded* LED* light.

Researchers say their approach, tested in rabbits, is the first to apply a display pixel into a soft contact lens to visualize glucose sensing.

The method could one day be used to screen for the early warning signs of diabetes and daily glucose monitoring.

The lens is the creation of the Ulsan National Institute of Science and Technology in South Korea.

The researchers developed a way to incorporate this ability into stretchy, transparent* nanostructures* of glucose sensors, wireless power transfer circuits and display pixels capable of accessing real-time sensing data.

The wireless display component of their system, which contains an antenna, rectifier* and LED pixel, can respond to changing glucose levels with the help of a graphene* sensor.(SD-Agencies)