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A team of scientists hopes to improve the sight of blind people by implanting proteins from spinach leaves into their eyes. When light falls on the proteins, it creates an electrical voltage, which could stimulate healthy regions of the retina and produce meaningful images, they say. "The idea is to insert these proteins into cells in the retina," says Elias Greenbaum of Oak Ridge National Laboratory in Tennessee, US.
http://www.newscientist.com/article/dn1362
Eyeball squeezing could correct sight - 21 March 2002 - New Scie
A light tap on the side of your head could one day restore your eyesight, believe scientists. The tap would tighten a band of artificial muscle wrapped round your eyeballs, changing their shape and bringing blurry images into focus.