2019
DOI: 10.1177/1120672119864554
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Repeatability and reproducibility of corneal biomechanical parameters derived from Corvis ST

Abstract: Introduction: The aim of this study was to evaluate repeatability and reproducibility of newly calculated biomechanical parameters of the cornea, developed by our research group. Methods: One eye from each of the 23 healthy subjects was measured three times consecutively, three times at different daytimes and on three different days. The within-subject standard deviation and coefficient of variation, as well as the intraclass correlation coefficient, were calculated for every parameter in each group. Results: … Show more

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Cited by 16 publications
(17 citation statements)
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“…A good example is the biomechanical fragility of the keratoconic cornea ( Zhang et al, 2021b ; Satitpitakul et al, 2021 ). To the best of our knowledge, a few studies have evaluated the repeatability and reproducibility of the new Corvis ST DCR parameters and bIOP in healthy participants ( Matsuura et al, 2019 ; Serbecic et al, 2020 ; Wang et al, 2021 ; Ye et al, 2021 ). Moreover, the present study was the largest study of corneal biomechanics that explored the association between DCR parameters (provided by Corvis ST incorporating the latest software) and several demographic and ocular characteristics in a Chinese healthy population.…”
Section: Discussionmentioning
confidence: 99%
“…A good example is the biomechanical fragility of the keratoconic cornea ( Zhang et al, 2021b ; Satitpitakul et al, 2021 ). To the best of our knowledge, a few studies have evaluated the repeatability and reproducibility of the new Corvis ST DCR parameters and bIOP in healthy participants ( Matsuura et al, 2019 ; Serbecic et al, 2020 ; Wang et al, 2021 ; Ye et al, 2021 ). Moreover, the present study was the largest study of corneal biomechanics that explored the association between DCR parameters (provided by Corvis ST incorporating the latest software) and several demographic and ocular characteristics in a Chinese healthy population.…”
Section: Discussionmentioning
confidence: 99%
“…CST has previously been shown to have good repeatability of parameters in healthy and keratoconic subjects with 18 parameters in normal eyes and 22 parameters in keratoconus eyes showing excellent repeatability (ICC ≥ 0.90). 36,37 The device has also previously been shown to produce an accurate analysis of corneal deformation independent from corneal morphological parameters such as central corneal thickness (CCT), corneal volume (CV) and anterior corneal curvature. 38 In our study, the inbuilt CST parameters did not significantly change, in keeping with previous reports that biomechanical changes post CXL in vivo are potentially less profound in vivo than ex vivo, 39 or that the CST is not sensitive enough to detect these changes.…”
Section: Discussionmentioning
confidence: 99%
“…Scheimpflug‐based tonometer (SBT) parameters have shown acceptable reliability and reproducibility in both healthy eyes and eyes with keratoconus (Serbecic et al 2019), but less so in advanced keratoconus (Herber et al 2020). Also, in healthy eyes, the repeatability and reproducibility of SBT parameters have been shown to depend on patient characteristics such as axial length, CCT and age (Miki et al 2017; Yang et al 2019) Therefore, caution should be taken when applying the results of the present study in clinical practice because it may be affected by the patient's background.…”
Section: Discussionmentioning
confidence: 99%