Brings new meaning to the term "Retina Display"...
Stanford boffins create light-powered artificial retina
A group of researchers led by Stanford University has created a prosthetic retina that works without an external power source. Instead, by combining a light sensor with photovoltaics, the implant is driven by light. Since ambient light doesn’t provide enough power, the system pulses the implant with infrared light from goggles …
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Friday 18th May 2012 09:08 GMT Ru
Re: 10mW/mm^2?
Sure, that sort of intensity wouldn't do an organic retina much good but, y'know, it isn't projecting on to one of those. The non-light sensitive bits of your eye are made of sterner stuff that the retina, too.
There are plenty of other bits of the eye that can be damaged, and it would be a bit crap for a device that is intended to replace your sight to become useless after a couple of weeks because it gave you cataracts.
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Friday 18th May 2012 11:35 GMT Pet Peeve
178 pixels per square mm
It's a bit preliminary to write about this when so far the only emplanted eye is ONE pixel...
If I'm doing the math right, the projected density of 178 pixels / sq mm is over 300dpi. Not too shabby, but since the retina is something like 128 megapixels (going by the distribution of rods and cones), they've still got some work to do.