Int Ophthalmol (2018) 38:959–966 https://doi.org/10.1007/s10792-017-0543-1 OR IGINAL PAPER Repeatability and agreement of central corneal thickness measurement with non-contact methods: a comparative study Tarannum Mansoori Nagalla Balakrishna Received: 2 February 2017 / Accepted: 17 April 2017 / Published online: 22 April 2017 Springer Science+Business Media Dordrecht 2017 Abstract AL-Scan/Sirius system (Mean difference -4.6 lm) Purpose To compare the central corneal thickness and a low level of agreement between AS-OCT/AL- (CCT) measurements and reliability of RTVue XR- scan (Mean difference -10.7 lm) and OCT/Sirius 100 anterior segment optical coherence tomography system (Mean difference -15.4 lm). (AS-OCT), AL-scan optical biometer and Schwind Conclusions AS-OCT underestimated CCT mea- Sirius anterior segment analysis system. surements when compared to other two devices in Methods The CCT was measured in one hundred and healthy subjects. Hence, one must be cautious when twenty-seven eyes of 127 healthy subjects with AS- analyzing the results from different machines and OCT, AL-scan and Sirius system. Mean CCT was should be aware that the measurement values are not compared among the instruments, and the level of interchangeable. agreement was assessed using Bland–Altman plots. One eye each of 30 subjects was randomly assigned Keywords CCT measurement RTVue XR-100 for intrasession intraoperator
International Ophthalmology – Springer Journals
Published: Apr 22, 2017
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