Darabe, F., and W. Makupa. “Comparison of Visual Outcomes Between Panretinal Photocoagulation and Panretinal Photocoagulation Plus Intravitreal Bevacizumab in Proliferative Diabetic Retinopathy Patients Treated at Northen Zonal Hospital”. Ophthalmology Research: An International Journal, Vol. 13, no. 2, July 2020, pp. 34-43, doi:10.9734/or/2020/v13i230164.