Those in the US suffering from blindness due to retinis pigmentosa (RP) will now be able to regain some vision bionically for the first time ever, thanks to Second Sight's Argus II retinal prosthesis. The device was just approved by the FDA for sale stateside after surmounting the same hurdle in Europe almost two years ago -- though it was first launched long, long before that. RP is a rare genetic disease that inflicts 100,000 or so Americans, destroying photoreceptors in the eye while leaving other cells intact. By implanting a device on the cornea that re
