Do you remember learning how to wash your hands as a child? An adult would have taught you how to run your hands under running water and lather with soap to remove germs. Did you realize then that this lesson might have saved your life?

Did you know that every minute, a child goes blind? Or that 80 percent of global blindness is preventable? This October 13 is World Sight Day, a day established to shed light on the impact of blindness and to raise awareness around the steps we can take to prevent it.

Across the globe, there are 200 million people at risk of trachoma, a preventable, blinding infectious disease. More than three million people are in need of immediate surgery to avoid blindness due to trichiasis, a manifestation of trachoma that causes eyelashes to turn inward, scraping the cornea with each blink. We blink 19,000 times a day

The current generation of vaccines against rotavirus, the leading cause of diarrheal disease in children under five years old, was introduced just a decade ago. In the intervening years, 81 countries have implemented rotavirus vaccination to prevent diarrheal disease.