Vermont’s Global Vision: Dr. Geoff Tabin, co-founder of the Himalayan Cataract Project, and Job Heintz, CEO of the international NGO based in Waterbury, Vt., discuss their mission to treat and end preventable blindness throughout the world, and the new book about the work of Tabin and his Nepalese colleague Dr. Sanduk Ruit, Second Suns: Two Doctors and Their Amazing Quest to Restore Sight and Save Lives, by the late David Oliver Relin.