Man Regains His Sight After Acid Attack

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James O'Brien, who lost vision in his right eye after an acid attack over 20 years ago, has regained his sight via a new surgery, the BBC reports. O'Brien is the first patient to receive this new treatment, which involved using stem cells to replace the scar tissue over his eye. Head over to the BBC to learn more about O'Brien's treatment, which took 10 months at London's Moorfields Eye Hospital