DailyTech reports researchers are developing digital contact lenses, a product that may one day display text and images, and enhance our vision. Full details over here.
Ultimately the digitally active contact lens of the future aims to be a high resolution display, which can assert an augmented reality, including text and images over human vision. Such a design would work for business (work displayed right in your eyes), communications (text messages, emails), and pleasure (imagine watching movies or "tripping" without drugs via in-eye vision).
The lens will also likely optionally incorporate glucose, occular pressure, and possibly other sensors to monitor eye health and overall body health.
In terms of text display, Professor Parviz is fast approaching that goal. In an interview with BBC News he states, "Our next goal is to incorporate some predetermined text in the contact lens."