The World Health Organization estimated in 2018 that worldwide 253 million people are visually impaired, with more than 90% of them living in developing and least developed countries. The World Blind Union (WBU) estimates that only 10% of people who are blind are able to go to school or have employment. WBU estimates that less than 10% of all published materials can be read by people who are blind or visually impared, with the lack of accessible books being a significant barrier to getting an education and leading an independent life.[7]