Children with disabilities, children in conflict areas and girls are the most likely to miss out on going to school, according to a new campaign.
Bill and Melinda Gates have said that by 2030, diseases including trachoma and river blindness will be consigned to the history books.
Paralympic Kelly Gallagher and Gaz Coombes from Supergrass have been photographed by Rankin to mark International Day of Persons with Disabilities today.
Sunetra, who plays Dr Zoe Hanna on medical drama Casualty, has been an ambassador for Sightsavers since 2009.