Learning to adapt as one's vision ebbs

From The NY Times:A man wakes up one morning to find that he cannot make out the details of a picture on the wall. His wife’s face, too, has become a blur. A trip to the ophthalmologist reveals he has macular degeneration. His story isn’t unique. More than eight million people in the United States have macular degeneration, a disease that generally affects people over the age of 60. (A related