Bastola, P, F Kahsay, S Zewengiel, and M M Muguleta. 2017. “The Prevalence of Diabetic Retinopathy, Risk Factors, Visual Impairment and Ocular Status Among Patients With Diabetes Mellitus Presenting to Berhan Aini National Referral Hospital, Eritrea: A Hospital Based Study”. Journal of Chitwan Medical College 6 (4):37-46. https://nepjol.info./index.php/JCMC/article/view/16714.