The hope is that this will prevent crucial light-sensing "cones" inside the retina from degenerating.

FORBES: Banishing Blind Spots

The artificial retina is composed by neuronal photoreceptors, called cones and rods, which capture light signals and transform them in electrical signals, transferring them to the retinal ganglion cells and, through the optic nerve, to the brain.

FORBES: Artificial Retina From A Photovoltaic Polymer

Perhaps you recycle your cardboard and Coke cans, but if you're looking for a bit of inspiration from master design-recyclers check out this pendant lamp made from hundreds of soda tabs, this Cone Light made from repurposed traffic cones, and this chandelier composed almost entirely of six-pack rings.

ENGADGET: Inhabitat's Week in Green: electric cars, solar planes, and really sweet lights

Rods are very sensitive to light, shapes and movements and cones are not as sensitive, but they control the perception of color.

FORBES: First Bionic Eye For US Market Awaits Approval From FDA