KamalHashim, B., AwadHassan, M., BalgisAlkhair, A., Zainab, A., Mazin, A., MamounMirghani, A., FadwaHashim, B. (2013). Prevalence and causes of blindness: Results from the rapid assessment of avoidable blindness survey in gezira state, sudan. Sudanese Journal of Ophthalmology. https://doi.org/10.4103/1858-540x.118641