KALU, A.; OTUKA, O.; EWEPUTANA, L.; NWACHUKWU, K. U.; UME, J. K. Pattern of Preoperative Astigmatism in Patients in South East Nigeria as Determined by Biometry. Ophthalmology Research: An International Journal, v. 13, n. 3, p. 28-31, 5 set. 2020.