1. Eye Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
2. Rehabilitation Sciences Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
3. Department of Optometry, School of Rehabilitation, Shahid Beheshti University of Medical Sciences, Tehran, Iran
4. Student research Committee, School of Rehabilitation, Shahid Beheshti University of Medical Sciences, Tehran, Iran
5. Department of Optometry, School of Paramedical Sciences, Mashhad University of Medical Sciences, Mashhad, Iran
6. College of Health and Life Sciences, Aston University, Birmingham, UK