The rehabilitation of large animals into the wild is a challenging endeavor, especially for social primates like orangutans. In this clip from Operation Wild, animal surgeon Izaak Ventor is tasked to restore the sight of Rosemary, a blind orangutan. Rosemary has cataracts, a condition that also commonly affects humans. Surgery is her only hope for a life in the rainforest. Doctor Ventor performs micro eye surgery to remove her old, clouded lens and replace it with a new acryllic substitute, all through only a three millimeter-wide incision. The success of the operation means Rosemary and her daughter Rodney can be successfully returned to the wild.