When I was in the first grade, an astute teacher noticed that I had trouble seeing the blackboard. This finding was quickly confirmed by a vision test. Formal evaluation by an ophthalmologist revealed that I had a rare degenerative retinal disease. Worse than that diagnosis was the ophthalmologist’s devastating prognosis for my life: attending college would be very challenging, sports and certain activities would be difficult or impossible, and it was unlikely that I would ever have a professional career.