A device that can 'mimic the action of the front end circuitry of the retina' and send images directly to the brain is being pioneered by a Weill Medical College of Cornell University team.
View this excellent TEDMED talk by neuroscientist Sheila Nirenberg for more details.
(TEDMED talk)
Star Trek fans have been waiting for Geordi la Forge's VISOR (or something like it) to send images directly to the brains of people who have lost their sight.
(Geordi la Forge)
Update 27-Feb-2017: Take a look at the vision strip from Orphans of the Void (1952) by Orville Shaara.
End update.
From Daily Mail; thanks to Moira for sending the tip and the reference (thereby rousing me from my sickbed!).
Scroll down for more stories in the same category. (Story submitted 12/28/2011)
Illustrating Classic Heinlein With AI
'Stasis, cold sleep, hibernation, hypothermia, reduced metabolism, call it what you will - the logistics-medicine research teams had found a way to stack people like cordwood and use them when needed.' - Robert Heinlein, 1956
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Gaia - Why Stop With Just The Earth?
'But the stars are only atoms in larger space, and in that larger space the star-atoms could combine to form living matter, thinking matter, couldn't they?'
Microsoft VASA-1 Creates Personal Video From A Photo
'...to build up a video picture would require, say, ten million decisions every second. Mike, you're so fast I can't even think about it. But you aren't that fast.'