1 Emory Eye Center, Emory University School of Medicine, Atlanta, Georgia.
2 World Health Organization, Geneva, Switzerland.
3 Centers for Disease Control and Prevention, Atlanta, Georgia.
4 Eternal Love Winning Africa (ELWA) Hospital, Monrovia, Liberia.
5 Emory Eye Center, Emory University School of Medicine, Atlanta, Georgia; Emory Global Health Institute, Emory University School of Medicine, Atlanta, Georgia. Electronic address: steven.yeh@emory.edu.