By injecting nanoparticles into the eyes of mice, scientists gave them the ability to see near-infrared light—a wavelength not normally visible to rodents (or people). It’s an extraordinary achievement, one made even more extraordinary with the realization that a similar technique could be used in humans.

Of all the remarkable things done to mice over the years, this latest achievement, described today in the science journal Cell, is among the most sci-fi.

A research team, led by Tian Xue from the University of Science and Technology of China and Gang Han from the University of Massachusetts Medical School, modified the vision of mice such that they were able to see near-infrared light (NIR), in addition to retaining their natural ability to see normal light. This was done by injecting special nanoparticles into their eyes, with the effect lasting for around 10 weeks and without any serious side effects.

A series of tests showed that the mice were indeed seeing infrared light, and not some other stimuli. The researchers say the human eye is not too dissimilar from those of mice, […]