Researchers from New Zealand and Australia are at the forefront of making corneal transplants possible.

In New Zealand at least 2000 people each year need a transplant for the outer lens of their eye, and the country's top optometrists are growing corneal tissue by using adult stem cells.

Director of the New Zealand National Eye Centre, Charles McGhee says it won't be long before they can grow the cells into functional biological cornea.

Already 40 to 50 people have received the adult stem cell transplants.

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