Scientists used stem cells and cultivated them in a dish so they could develop into immature photoreceptors or light-catching cells. It'll be a couple of years until a human trial is carried out, but this stem cell procedure could signify the cure for blindness caused by diabetes or age.
http://www.loop21.com/health/cure-blindness-coming-soon
http://www.loop21.com/health/cure-blindness-coming-soon
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