1. Department of Optometry, Mashhad University of Medical Sciences, Mashhad, Iran
2. Department of Optometry and Visual Science, University of London, London, UK
3. Contact Lens and Visual Optics Laboratory, Queensland University of Technology, Brisbane, Queensland, Australia
4. Eye Research Centre, Mashhad University of Medical Sciences, Mashhad, Iran
5. Department of Ophthalmology, University of Florida, Gainesville, FL, USA
6. School of Health Sciences, University of Manchester, Manchester, UK