This is interesting its a contact lens which can help blind people to see again. The treatment works by using the patients own cells to repair damage to the cornea. It is carried out under local anaesthetic and patients can go home just two hours after surgery. Under the treatment samples of stem cells are taken from a healthy eye. These are then grown on a contact lens for 10 days before the lens in inserted into the eye. After three weeks the stem cells heal damage to the cornea and vision begins to improve. So far three patients have been treated all of whom had poor vision caused by corneal disease, a form of blindness which affects around 10 million people worldwide.
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