Wear glasses. Earn more

Looking to the future "AT THE end of the day I would be anxious," says Anil Awasthi, a 44-year-old garment worker in Delhi, "thinking what mistakes of mine would be pointed out." He was worried about what was going to happen as his sight deteriorated, until--courtesy of VisionSpring, an American social enterprise--he got reading glasses. "I'm confident now that my work will meet my boss's expectations," he says. "I go home satisfied." For the rich, the worst consequence of long sightedness is ha...