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Susan R. Barry, Ph.D., is a professor of neurobiology in the Department of Biological Sciences at Mount Holyoke College. She had been cross-eyed and stereoblind after early infancy but learned to see in three dimensions at age 48 by retraining her visual system with optometric vision therapy. Her storey was first described by Oliver Sacks in his New Yorker article, Stereo Sue, and then greatly expanded by Sue in her book, Fixing My Gaze: A Scientist's Journey Into Seeing in Three Dimensions. Sue's book challenges the conventional wisdom that the brain is permanently wired for basic perceptual skills throughout a "critical period" in early childhood and offers instead a revelatory account of the brain's capacity for change. [+]