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Evaluation of Central Corneal Thickness Using Corneal Dynamic Scheimpflug Analyzer Corvis ST and Comparison with Pentacam Rotating Scheimpflug System and Ultrasound Pachymetry in Normal Eyes
Joint Authors
Huang, Jinhai
Bao, Fangjun
Lu, Weicong
Wang, Qinmei
Yu, Ayong
Zhao, Weiqi
Huang, Zixu
Savini, G.
Source
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-12-01
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
Purpose.
To assess the repeatability and reproducibility of central corneal thickness (CCT) measurements by corneal dynamic Scheimpflug analyzer Corvis ST in normal eyes and compare the agreement with Pentacam rotating Scheimpflug System and ultrasound pachymetry.
Methods.
84 right eyes underwent Corvis ST measurements performed by two operators.
The test-retest repeatability (TRT), within-subject coefficient of variation (CoV), and intraclass correlation coefficient (ICC) were used to evaluate the intraoperator repeatability and interoperator reproducibility.
CCT measurements also were obtained from Pentacam and ultrasound pachymetry by the first operator.
The agreement between the three devices was evaluated with 95% limits of agreement (LoA) and Bland-Altman plots.
Results.
Corvis ST showed high repeatability as indicated by TRT ≤ 13.0 μm, CoV < 0.9%, and ICC > 0.97.
The interoperator reproducibility was also excellent.
The CoV was <0.9%, and ICC was >0.97.
Corvis ST showed significantly lower values than Pentacam and ultrasound pachymetry ( P < 0.001 ).
The 95% LoA between Corvis ST and Pentacam or ultrasound pachymetry were −15.8 to 9.5 μm and −27.9 to 12.3 μm, respectively.
Conclusions.
Corvis ST showed excellent repeatability and interoperator reproducibility of CCT measurements in normal eyes.
Corvis ST is interchangeable with Pentacam but not with ultrasound pachymetry.
American Psychological Association (APA)
Yu, Ayong& Zhao, Weiqi& Savini, G.& Huang, Zixu& Bao, Fangjun& Lu, Weicong…[et al.]. 2015. Evaluation of Central Corneal Thickness Using Corneal Dynamic Scheimpflug Analyzer Corvis ST and Comparison with Pentacam Rotating Scheimpflug System and Ultrasound Pachymetry in Normal Eyes. Journal of Ophthalmology،Vol. 2015, no. 2015, pp.1-8.
https://search.emarefa.net/detail/BIM-1069834
Modern Language Association (MLA)
Yu, Ayong…[et al.]. Evaluation of Central Corneal Thickness Using Corneal Dynamic Scheimpflug Analyzer Corvis ST and Comparison with Pentacam Rotating Scheimpflug System and Ultrasound Pachymetry in Normal Eyes. Journal of Ophthalmology No. 2015 (2015), pp.1-8.
https://search.emarefa.net/detail/BIM-1069834
American Medical Association (AMA)
Yu, Ayong& Zhao, Weiqi& Savini, G.& Huang, Zixu& Bao, Fangjun& Lu, Weicong…[et al.]. Evaluation of Central Corneal Thickness Using Corneal Dynamic Scheimpflug Analyzer Corvis ST and Comparison with Pentacam Rotating Scheimpflug System and Ultrasound Pachymetry in Normal Eyes. Journal of Ophthalmology. 2015. Vol. 2015, no. 2015, pp.1-8.
https://search.emarefa.net/detail/BIM-1069834
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1069834