Uncorrected refractive error is a frequent cause of visual impairment in the global population. In 2006, the World Health Organization released global estimates on visual impairment. According to their findings, there are approximately 314 million people in the world whose vision is impaired. Of this population 90% of those individuals live in developing countries and 153 million cases are believed to be due to uncorrected refractive error. The impact of uncorrected refractive error is great, including, but not limited to, loss of employment opportunities, inability to care for family, and inability to receive an education. The challenge is to determine the most effective and accessible method of detecting refractive error and dispensing spectacles for better vision.