Neurologist and writer Oliver Sacks has spent his career examining patients struggling to survive with a wide range of neurological conditions: Tourette's syndrome, autism, Parkinson's, musical hallucinations, Alzheimer's disease and phantom-limb syndrome. But in his latest book, "The Mind's Eye," Sacks turns the tables on himself. He writes about being diagnosed with a rare eye tumor and the subsequent total loss of vision on his right side. In this interview with Terry Gross, he shares the experience of adapting to a world that appears to be entirely flat.
