A simple solution to the biggest but unheard health crisis -- eyeglasses

More than a billion people around the world need eyeglasses but don't have them, researchers say

Shivam Kumar’s failing eyesight was manageable at first. To better see the chalkboard, the 12-year-old moved to the front of the classroom, but in time, the indignities piled up.

Increasingly blurry vision forced him to give up flying kites and then cricket, after he was repeatedly whacked by balls he could no longer see. The constant squinting gave him headaches, and he came to dread walking home from school.

“Sometimes I don’t see a motorbike until it’s almost in my face,” he said.

As his grades flagged, so did his dreams of becoming a pilot. “You can’t fly a plane if you’re blind,”