1. Department of Optometry, School of Paramedical Sciences, Mashhad University of Medical Sciences, Mashhad - Iran
2. Noor Research Center for Ophthalmic Epidemiology, Noor Eye Hospital, Tehran - Iran
3. Dezful University of Medical Sciences, Dezful - Iran
4. Refractive Error Research Center, Mashhad University of Medical Sciences, Mashhad - Iran
5. Noor Ophthalmology Research Center, Noor Eye Hospital, Tehran - Iran
6. Department of Medical Surgical Nursing, School of Nursing and Midwifery, Shahid Beheshti University of Medical Sciences, Tehran - Iran