Earbuds can pipe audio directly from a portable player to the ear. But did you ever imagine that eyeglasses or contact lenses could deliver digital images directly from a smartphone to the retina?
Several companies are developing prototypes for digital devices that look like stylish eyewear but may one day offer such capabilities to consumers. The glasses are called heads-up displays because the wearer can always look through them and see the real world — like the sidewalk just ahead — but can also see, on an overlay image, virtual information like an electronic map or an arrow showing the correct way to a destination. The glasses may also help the wearer remember the name of a long-lost friend she sees on the street. ...
Contact lenses are also being developed for mobile displays. Babak A. Parviz, an associate professor of electrical engineering, with his team at the University of Washington in Seattle, has created a biocompatible contact lens that has miniaturized electronics and optoelectronics integrated into the lens.
--Anne Eisenberg, NYT, on seeing the world like a Terminator does