A Comprehensive Assessment of the Precision and Agreement of Anterior Corneal Power Measurements Obtained Using 8 Different Devices

Qinmei Wang, Giacomo Savini, Kenneth J Hoffer, Zhen Xu, Yifan Feng, Daizong Wen, Yanjun Hua, Feng Yang, Chao Pan and Jinhai Huang

PLOS ONE, 2012, vol. 7, issue 9, 1-8

Abstract: Purpose: To comprehensively assess the precision and agreement of anterior corneal power measurements using 8 different devices. Methods: Thirty-five eyes from 35 healthy subjects were included in the prospective study. In the first session, a single examiner performed on each subject randomly measurements with the RC-5000 (Tomey Corp., Japan), KR-8000 (Topcon, Japan), IOLMaster (Carl Zeiss Meditec, Germany), E300 (Medmont International, Australia), Allegro Topolyzer (Wavelight AG, Germany), Vista (EyeSys, TX), Pentacam (Oculus, Germany) and Sirius (CSO, Italy). Measurements were repeated in the second session (1 to 2 weeks later). Repeatability and reproducibility of corneal power measurements were assessed based on the intrasession and intersession within-subject standard deviation (Sw), repeatability (2.77Sw), coefficient of variation (COV), and intraclass correlation coefficient (ICC). Agreement was evaluated by 95% limits of agreement (LoA). Results: All devices demonstrated high repeatability and reproducibility of the keratometric values (2.77Sw 0.98). Repeated-measures analysis of variance with Bonferroni post test showed statistically significant differences (P

Date: 2012
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0045607 (text/html)
https://journals.plos.org/plosone/article/file?id= ... 45607&type=printable (application/pdf)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0045607

DOI: 10.1371/journal.pone.0045607

Access Statistics for this article

More articles in PLOS ONE from Public Library of Science
Bibliographic data for series maintained by plosone ().