LONDON, UNITED KINGDOM - MARCH 20: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME) Sophie, Countess of Wessex visits the Orbis Flying Eye Hospital at Stansted Airport on March 20, 2017 in London, England. Eye charity Orbis's new Flying Eye Hospital (a converted MD-10 cargo freighter) is equipped with an onboard operating theatre to perform eye surgery to treat avoidable blindness in Africa, Asia and Latin America. (Photo by Max Mumby/Indigo/Getty Images)
