Moravej, R., Mirzajani, A. and Sahihalnasab, S. 2017. Investigating the Causes of Visual Impairment and Legal Blindness among Patients Coming to a Referral Hospital in Tehran, Iran. Journal of Ophthalmic and Optometric Sciences. 1, 2 (Jan. 2017), 29–34. DOI:https://doi.org/10.22037/joos.v1i2.18488.