Apart from helping to improve eyesight, LED light is now used to restore hearing, according to a new study conducted by University of Göttingen, Germany. The scientists created an optical cochlear implant based on LED lights that can safely and partially restore the sensation of hearing in deaf rats and gerbils. Their design's light-based approach allowed it to deliver more accurate and pinpointed signals to auditory nerves compared with current implants based on electricity, which often suffer from poor sound quality. The technology also offers some improvements ove...