These three companies have developed tactile devices that help visually impaired spectators follow the live action playing ...

When the sun starts setting, whip these out, look through the 2.3-inch HD screen, and adjust the infrared until animals look ...

By stimulating thousands of individual cone cells, researchers made volunteers see a blue-green color of "unprecedented ...

Using an experimental technique called "Oz," researchers stimulated the human retina such that people saw a brand-new color.