This book is mostly a study of three cases of vision disorders. The book explores the effects of the degenerative disease in terms of brain function and vision loss, and the coping strategies of the people suffering the loss. One of the studies follows a person who actually feels he benefited from his vision loss.
I had hoped it would explore the neuroscience side of the issues more. The details are still interesting, although the studies seemed to get long and repetitive. The final chapter of the book does discuss the neuroscience more.
Generally, I didn’t think this book was as good as some of his previous works. This isn’t one I’d recommend to the average person.