More about stem cell research:

"The cure was so dramatic it surprised even the researchers.

They had injected human adult stem cells into the corneas of mice and, in due time, the scarring and cloudiness that cause corneal blindness completely disappeared."
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“This proves that these stem cells can be used to treat scars and abnormal corneas,” Schwab said.
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Repeating the process in humans remains years away. The human cornea is thicker and more complex than mouse corneas. But tests done on human eyes from an eye bank that couldn’t be used for transplantation show that the technique could be used on human eyes.
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Next comes a series of research steps leading to human clinical trials..."


Source: Pittsburgh Post-Gazette