1. Department of Optometry, School of Paramedical Sciences, Mashhad University of Medical Sciences, Mashhad, Iran
2. Refractive Error Research Centre, Mashhad University of Medical Sciences, Mashhad, Iran
3. Rehabilitation Sciences Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
4. Optometry and Vision Sciences Research Group, Aston University, Health and Life Sciences, Birmingham, UK
5. Student Research Committee, Zahedan University of Medical Sciences, Zahedan, Iran