QUOTE ('Sconnie @ Dec 30 2009, 06:54 PM)

The biggest challenge will be to keep the image moving properly. A static image on the contact lense would "fade out". The visual system would simply conclude it to be a mistake and "calculate" it away.
In addition, the potoreceptors would be unable to replenish and as a result stop transmitting signals, as no new ep could be generated.
It will be interesting to follow the development.