1 Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.
2 Truhlsen Eye Institute, University of Nebraska Medical Center, Omaha, NE, USA; Global Center for Health Security, University of Nebraska Medical Center, Omaha, NE, USA; College of Public Health, University of Nebraska Medical Center, Omaha, NE, USA.
3 Division of Ophthalmology, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa.
4 National Centre for Infectious Disease, Singapore; Lee Kong Chian School of Medicine, Singapore; Department of Infectious Disease, Tan Tock Seng Hospital, Singapore.
5 Infectious Ophthalmology Laboratory, Evandro Chagas National Institute of Infectious Diseases-FIOCRUZ, Rio de Janeiro, Brazil.
6 Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore; Lee Kong Chian School of Medicine, Singapore; National Healthcare Group Eye Institute, Tan Tock Seng Hospital, Singapore; Singapore Eye Research Institute, Singapore; Duke NUS Medical School, Singapore. Electronic address: rupesh_agrawal@ttsh.com.sg.