An Example of Corneal Regeneration
From the Australian: "Three Australians have had their sight restored thanks to their own stem cells and ordinary contact lenses. Although the novel technique was used to reverse blinding corneal disease, it promises to be a quick, painless and cheap treatment for other visual disorders. It may even be useful for repairing damaged skin ... We're quietly excited. We don't know yet if (the correction) will remain stable, but if it does it's a wonderful technique ... two of the three patients were legally blind in the treated eye; they can now read big letters on the eye chart. The third could read the top few rows of the chart but is now able to pass the vision test for a driving license. ... the idea to team stem cells with contact lenses came from an observation [that] stem cells from the cornea, or front of the eye, stick to contact lenses. To obtain the stem cells, Dr Watson took less than a millimeter of tissue from the side of each patients' cornea [and] cultured stem cells from the tissue in extended wear contact lenses. Dr Watson then cleaned the surface of the patients' corneas and inserted the lenses. Within 10 to 14 days the stem cells began to attach to the cornea, replenishing damaged."
Link: http://www.theaustralian.news.com.au/story/0,25197,25550134-2702,00.html