Investigating the world's deadliest diseases
Most adults older than 50 need reading glasses — more than 1 billion people in the developing world, according to the International Agency for the Prevention of Blindness — though the vast majority simply accept their creeping disability.
That’s what happened to D. Periyanayakam, 56, a power-company employee whose job requires him to read electrical meters. His failing eyesight also made it hard to drive or respond to texts from customers and co-workers.
“I figured it was only a matter of time before they suspended me,” he said during a visit to a mobile eye clinic run by Aravind Eye Hospital, a nonprofit institution that screened his vision and told him he would soon need cataract surgery.
Periyanayakam returned to work that day with a pair of glasses..