Repeatability and Reproducibility of Measurements Using a NT-530P Noncontact TonoPachymeter and Correlation of Central Corneal Thickness with Intraocular Pressure
Joint Authors
Shimizu, Kimiya
Fujimura, Fusako
Kamiya, Kazutaka
Fujiwara, Kazuko
Shoji, Nobuyuki
Source
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-5, 5 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-10-03
Country of Publication
Egypt
No. of Pages
5
Main Subjects
Abstract EN
Purpose.
To investigate the repeatability and reproducibility of intraocular pressure (IOP) and central corneal thickness (CCT) measurements using a noncontact tono/pachymeter (NT-530P) and to assess the correlation of CCT with IOP.
Methods.
Forty-six eyes of healthy volunteers were measured by two examiners.
Three consecutive measurements per eye were performed.
Repeatability was assessed using the coefficient of variation, and reproducibility was assessed using Bland-Altman plots.
Linear correlations were used to determine agreement between CCT and noncorrected IOP and CCT and corrected IOP, which was calculated using a formula built into the NT-530P.
Results.
The coefficient of variation for IOP was 6.4% and for CCT was 0.4%.
The 95% limits of agreement between examiners were −0.17±1.42 mmHg (range: −2.95 to 2.61 mmHg) for IOP, −0.93±4.37 μm (range: −9.50 to 7.64 μm) for CCT.
The corrected IOP was significantly higher than the noncorrected IOP (P=0.010.3).
The noncorrected IOP significantly correlated with CCT (r=−0.4883, P=0.0006).
The corrected IOP showed no significant correlation with CCT (r=−0.0285, P=0.8509).
Conclusions.
NT-530P offered repeatability and reproducibility in both IOP and CCT measurements.
The corrected IOP calculated using the NT-530P was independent of the CCT, suggesting that this IOP may be less influenced by the central corneal thickness.
American Psychological Association (APA)
Fujimura, Fusako& Kamiya, Kazutaka& Fujiwara, Kazuko& Shoji, Nobuyuki& Shimizu, Kimiya. 2013. Repeatability and Reproducibility of Measurements Using a NT-530P Noncontact TonoPachymeter and Correlation of Central Corneal Thickness with Intraocular Pressure. BioMed Research International،Vol. 2013, no. 2013, pp.1-5.
https://search.emarefa.net/detail/BIM-1004125
Modern Language Association (MLA)
Fujimura, Fusako…[et al.]. Repeatability and Reproducibility of Measurements Using a NT-530P Noncontact TonoPachymeter and Correlation of Central Corneal Thickness with Intraocular Pressure. BioMed Research International No. 2013 (2013), pp.1-5.
https://search.emarefa.net/detail/BIM-1004125
American Medical Association (AMA)
Fujimura, Fusako& Kamiya, Kazutaka& Fujiwara, Kazuko& Shoji, Nobuyuki& Shimizu, Kimiya. Repeatability and Reproducibility of Measurements Using a NT-530P Noncontact TonoPachymeter and Correlation of Central Corneal Thickness with Intraocular Pressure. BioMed Research International. 2013. Vol. 2013, no. 2013, pp.1-5.
https://search.emarefa.net/detail/BIM-1004125
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1004125