Echieh , C.I., Echieh , C.P., Ugochukwu, E., Taiwo, O., Ifechukwu, M., Amobi , M.-B.C. and Bello, S. 2021. An Assessment of Knowledge and Practice of Goldmann Applanation Tonometer Calibration Error Checks among Ophthalmology Residents in Nigeria. Transactions of the Ophthalmological Society of Nigeria. 4, 1 (Aug. 2021).