Bascom Palmer Eye Institute, University of Miami, Miami, FL, USA; Surgical Services, Miami Veterans Administration, Miami, FL, USA. Electronic address: agalor@med.miami.edu. Department of Optometry and Vision Sciences, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Victoria, Australia. Department of Ophthalmology, Peking University Eye Center, Peking University Third Hospital, Beijing, China. Cornea and Ocular Surface Unit, Eye Repair Lab, San Raffaele Scientific Institute, Milan, Italy. Pallas-Kliniken, Olten, Bern, Zurich, Switzerland; University of Basel, Basel, Switzerland. Triangle Eye Consultants, Raleigh, NC, USA; Department of Ophthalmology, Tulane University, New Orleans, LA, USA. Instituto Universitario Fernandez-Vega, Universidad de Oviedo, Principality of Asturias, Spain. Department of Ophthalmology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea. College of Health and Life Sciences, Aston University, Birmingham, UK. School of Optometry, University of Alabama at Birmingham, Birmingham, AL, USA. Department of Ophthalmology, Othorynolaringology and Head & Neck Surgery, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Sao Paulo, Brazil. Cornea and External Eye Disease Service, Singapore National Eye Center, Ocular Surface Research Group, Singapore Eye Research Institute, Eye Academic Clinical Program, Duke-National University of Singapore, Singapore. Department of Ophthalmology, New Zealand National Eye Centre, The University of Auckland, Auckland, New Zealand.