Michie O’Day was born with neurofibromatosis type 2 (NF2), a genetic disorder in which tumors grow on the ends of nerve fibers. In O’Day’s case, the tumors grow in her brain and spinal cord. The disease and its treatment eventually led to loss of hearing and balance for Ms. O’Day. She is unable to participate in most activities she once enjoyed, including skiing, snow-shoeing, swimming, hiking, and cycling. Three years ago, she stopped driving car.