Calvo Sanz, Jorge AntonioRuiz Alcocer, JavierSánchez Tena, Miguel Ángel2017-05-222017-05-222018Calvo-Sanz, J. A., Ruiz-Alcocer, J., & Sánchez-Tena, M. A. (2018). Accuracy of Cirrus HD-OCT and Topcon SP-3000P for measuring central corneal thickness. Journal of Optometry, 11(3), 192-197. http://doi.org/10.1016/j.optom.2016.12.0041989134218884296http://hdl.handle.net/11268/6426The purpose of this study is to o compare and analyze the interchangeability of three measuring systems, each based on a different technique, for central corneal thickness (CCT) analysis. Methods: CCT measurements were measured using optical coherence tomography (OCT), noncontact specular microscopy (NCSM), and ultrasonic pachymetry (USP) in 60 eyes of 60 healthy patients with a mean age of 66.5 ± 15.0 years and a mean spherical equivalent of 0.43 ± 1.14 D. Analysis of variations in measurement concordance and correlation among the three different methods were performed. Comparison of CCT measurements were done using Bland---Altman plots (with bias and 95% confidence intervals), intraclass correlation coefficient (ICC), and paired t-student analysis. OCT and UPS offered highly comparable results, whereas NCSM offered lower mean CCT values compared to the other two methods. Therefore, NCSM should not be considered a reliable method for measuring CCT and should rather be considered for assessing longitudinal changes in the same patient.engAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttps://creativecommons.org/licenses/by-nc-nd/4.0/journal article10.1016/j.optom.2016.12.004open accessCórnea - EnfermedadesOptometríaÓptica