Department of Ophthalmology, New Zealand National Eye Centre, The University of Auckland, Auckland, New Zealand. Electronic address: jp.craig@auckland.ac.nz.

Department of Ophthalmology and Otorhinolaryngology, University of Campinas Campinas, Brazil.

College of Health & Life Sciences, School of Optometry, Aston University, Birmingham, UK.

Department of Optometry and Vision Sciences, The University of Melbourne, Parkville, Victoria, Australia.

School of Optometry and Vision Science, Queensland University of Technology, Kelvin Grove, Queensland, Australia.

Bascom Palmer Eye Institute, University of Miami, Surgical Services, Miami Veterans Administration, Miami, FL, USA.

Department of Ophthalmology and Visual Sciences, Federal University of Sao Paulo/Paulista School of Medicine, Sao Paulo, SP, Brazil.

Centre for Ocular Research & Education, School of Optometry and Vision Science, University of Waterloo, Waterloo, ON, Canada.

School of Optometry and Vision Science, UNSW Sydney, NSW, Australia.

School of Optometry and Vision Science, UNSW Sydney, NSW, Australia.

Department of Ophthalmology, Weill Cornell Medicine, New York, NY, USA.

Tear Film & Ocular Surface Society, Boston, MA, USA.

School of Optometry and Vision Science, UNSW Sydney, NSW, Australia.

Tear Film & Ocular Surface Society, Boston, MA, USA.