From the co-author of Three Cups of Tea comes the inspiring story of two very different doctors—one from the United States, the other from Nepal—united in a common mission: to rid the world of preventable blindness.

In this transporting book, David Oliver Relin shines a light on the work of Geoffrey Tabin and Sanduk Ruit, gifted ophthalmologists who have dedicated their lives to restoring sight to some of the world's most...