Table of Contents
ISRN Ophthalmology
Volume 2012, Article ID 869319, 5 pages
Clinical Study

Measuring Corneal Thickness with SOCT, the Scheimpflug System, and Ultrasound Pachymetry

Department of Ophthalmology, Collegium Medicum, Nicolaus Copernicus University, 85-650 Bydgoszcz, Poland

Received 6 June 2012; Accepted 13 August 2012

Academic Editors: A. M. Avunduk, I. G. Pallikaris, Y. F. Shih, and Á. Szél

Copyright © 2012 Ilona Piotrowiak et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Background and Objective. Evaluation of agreement, repeatability, and reproducibility of central and minimal corneal thickness (CCT and MCT) measurements obtained by SOCT, the Scheimpflug system, and ultrasound pachymetry. Materials and Methods. 28 eyes of healthy patients were enrolled. Pachymetry measurements were performed with SOCT, the Scheimpflug system, and ultrasound instrument. Each measurement was taken by 3 operators on 3 devices providing a total of 2100 measurements. Results. The mean CCT for SOCT, Scheimpflug system, and ultrasound instrument was 537.92, 545.94, and 555.74 μm, respectively, ( ). The respective mean coefficients of repeatability for CCT were 0.61, 0.82 and 0.80, whereas mean coefficients of interoperator reproducibility for CCT were 0.91, 1.11, and 1.25. Conclusions. CCT and MCT measurements show moderate agreement between instruments. The repeatability and interoperator reproducibility of the results obtained by SOCT are somewhat higher. The operator's impact on CCT and MCT measurements is insignificant in all devices.