From torment in Sudan to a life of hope, promise ← Related Article Visit The Boston Globe Share on Twitter Share on Facebook Comment on this Scroll to top of page Christian Solidarity International Keer Deng (center) was sold into slavery in his native Sudan when he was about 5. This picture is of him on the day he was liberated. Ellen Ratner Fox News analyst Ellen Ratner first met Deng five years ago. He now calls her "Momma Chicken," the first two English words he learned. Ellen Ratner Surgeries have restored Deng's ability to see some colors in his right eye. His slave master blinded him when he was 6 as punishment. Pat Greenhouse/Globe Staff Now 19, Deng attends the Perkins School for the Blind in Watertown. Pat Greenhouse/Globe Staff One of his new experiences is learning the piano. He will play Franz Schubert's "Andante" in a duet at a May recital. Pat Greenhouse/Globe Staff Ratner (right) said she never wanted children but now finds herself mothering Deng. She wants him to be "equipped to grow into a great man."