Tiny flashes of infrared light from LEDs can heal wounds, build muscle, help heal the effects of diabetes and repair blindness?but nobody knows why. LEDs are the tiny, ultra-efficient light-emitting diodes, or bulbs, like the ones found in digital clocks and TV remote controls. Despite being tested by NASA, the Pentagon and hospitals, pathologist Marti Jett says, “There’s not a clear idea of how this works.”
Noah Shachtman writes in Wired.com about research done by Dr. Harry Whelan, who used LEDs to restore the vision of rats blinded by toxic doses of methanol. After exposure to the LED flashes, 95% of their injuries were repaired.