Louis Braille's Leather Awl

Origins
Louis Braille was blinded at three years old when he accidently poked a leather awl into one of his eyes while in his father’s workshop. His eye could not be treated and the other eye became infected and slowly turned blind, too. He created the Braille system, a writing system of raised dots that gave the blind and visually impaired the ability to read. His system is still used today all across the world.

Effects
When scratched against the skin, it causes the person to go blind. As compensation, the artifact grants a heightened sense of touch, to the point where the person can detect vibrations in the ground.