1. Department of Orbit, Oculoplasty, Ocular Oncology and Ocular Prosthesis, Aravind Eye Hospital, Madurai, India
2. Department of Ophthalmology and Visual Science, Yale University School of Medicine, New Haven, Connecticut, USA
3. Department of Otolaryngology, Head and Neck Surgery, Aravind Eye Hospital, Madurai, India
4. Department of Biostatistics, Aravind Eye Hospital, Madurai, India
5. Department of Ophthalmology, University of Michigan, Ann Arbor, Michigan, USA
6. Department of Ophthalmology and International Health, Johns Hopkins University, Baltimore, Maryland, USA
7. Department of Ophthalmology, Edward S. Harkness Eye Institute, Columbia University Irving Medical Center, New York-Presbyterian Hospital, New York, New York, USA