Umezurike, B., M. Akhimien, O. Udeala, U. Green, U. Okpechi-Agbo, and M. Ohaeri. “Primary Open Angle Glaucoma: The Pathophysiolgy, Mechanisms, Future Diagnostic and Therapeutic Directions”. Ophthalmology Research: An International Journal, Vol. 10, no. 3, June 2019, pp. 1-17, doi:10.9734/or/2019/v10i330106.