A doctor (L) cleans an eye of a patient who has undergone a cataract surgery at a hospital in Xin Barag Youqi of Hulun Buir City, north China's Inner Mongolia Autonomous Region, April 11, 2019. As part of the Bright Journey free cataract surgery program, 59 patients from Mongolia and 73 from China's Inner Mongolia have undergone free cataract surgery in Hulun Buir City Tuesday through Thursday. (Xinhua/Peng Yuan)