1. Noor Research Center for Ophthalmic Epidemiology, Noor Eye Hospital, Tehran, Iran
2. Department of Optometry, Mashhad University of Medical Sciences, Mashhad, Iran
3. Rehabilitation Research Center, Department of Optometry, Iran University of Medical Sciences, Tehran, Iran
4. Refractive Errors Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
5. Department of Basic Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran