The first at this scale in South Asia and Southeast Asia, the project aims to address the need to combat refractive errors, the leading cause of vision impairment affecting more than 2.2 billion people globally The first at this scale in South Asia and Southeast Asia, the project aims to address the need to combat refractive errors, the leading cause of vision impairment affecting more than 2.2 billion people globally Assam Health News, Wellbeing Tips, Diseases, Treatment and Nutrition | The Hindu