Vision impairment is one of the biggest yet least recognized global health problems. One-third of the global population – 2.5 billion people – suffer from vision impairment and its consequences. 1 billion people need only over the counter, non-prescription reading glasses to correct their vision. Of those, over 500 million people live in impoverished communities and lack access to available, affordable reading glasses. The majority live in developing countries, where near vision impairment affects people in their 30s, approximately 10 years earlier than in developed countries, and when they are in their prime working years. In these settings, people need reading glasses to see close-up in order to work, read, perform daily tasks, and take care of their children.