Here's a link to an article which gives some background, I would urge caution though - this may just be a puff piece to gain more research funding. I have serious doubts about wonder kit that claims to cure blindness. http://www.dailymail.co.uk/sciencetech/article-1258115/Blind-soldier-tongue-thanks-ground-breaking-device.html?printingPage=true Regards G From glorious Devon, England.
