Every day we get a little closer to the future, and recently, Chinese scientists have created contact lenses that can see infrared light.
The team screened various biocompatible polymeric materials (used to make commercial contact lenses) to find just the right refractive index and optical and mechanical properties, and integrated them with the aforementioned nanoparticles to make upconversion contact lenses (UCLs). Then they tested their lenses on mice, giving them a choice between a dark box and a box illuminated with infrared light. Mice wearing the contacts chose the dark box; those without augmented vision showed no preference. And the pupils of the contact-wearing mice constricted in response to infrared light, while brain imaging showed the visual processing centers reacting to it as well.