AMRITSAR, India — Harpreet Kaur, 13, prefers to sit in the front row of all her classes. She likes playing with her friends and watching her favorite shows on TV, like any teenager in her hometown. But in January, she noticed that she was not able to make out the images on the TV, even when she sat right in front of it. Her father took her to the eye hospital, and there doctors found that her vision was seriously impaired, and probably had been for a few years.
In most of the world, the leading cause of blindness is cataract, usually affecting people over the age of 60. But 8 million people are blind due to what’s called ‘refractive error,’ when the eye cannot clearly focus images, a condition that usually crops up in childhood. It is a very common visual impairment that is entirely preventable by wearing the right eyeglasses or contact lenses, but worsens without appropriate correction. If corrective lenses are not prescribed early, there can be irreversible loss of vision.