Moyegbone, J.E., Nwose, E.U., Nwajei, S.D., Odoko, J.O., Agege, E.A. and Igumbor, E.O. 2020. Epidemiology of visual impairment: focus on Delta State, Nigeria. International Journal Of Community Medicine And Public Health. 7, 10 (Sep. 2020), 4171–4179. DOI:https://doi.org/10.18203/2394-6040.ijcmph20204392.