Fancy yourself as Superman? Scientists have created contact lenses that let you shoot lasers from your eyes

The ultra-thin membranes are placed on the iris and produce a green beam which can shine up to 20ins from the eye.

Scientists said the beam of light could be used to help in a medical setting or to check for counterfeit banknotes.

Prof Malte Gather, of a research team at St Andrews University in Fife, said: “The intensity of the laser is so low you can put it in the eye without damaging it. It is a new milestone in laser development.”

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