title: Measuring Corneal Thickness with SOCT, the Scheimpflug System, and Ultrasound Pachymetry.
abstract: 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, (P < .001). 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.
authors.affiliation: Department of Ophthalmology, Collegium Medicum, Nicolaus Copernicus University, 85-650 Bydgoszcz, Poland.
authors.forename: Ilona
authors.initials: I
authors.lastname: Piotrowiak
authors.affiliation: Department of Ophthalmology, Collegium Medicum, Nicolaus Copernicus University, 85-650 Bydgoszcz, Poland.
authors.forename: Beata
authors.initials: B
authors.lastname: Soldanska
authors.affiliation: Department of Ophthalmology, Collegium Medicum, Nicolaus Copernicus University, 85-650 Bydgoszcz, Poland.
authors.forename: Mateusz
authors.initials: M
authors.lastname: Burduk
authors.affiliation: Department of Ophthalmology, Collegium Medicum, Nicolaus Copernicus University, 85-650 Bydgoszcz, Poland.
authors.forename: Bartlomiej J
authors.initials: BJ
authors.lastname: Kaluzny
authors.affiliation: Department of Ophthalmology, Collegium Medicum, Nicolaus Copernicus University, 85-650 Bydgoszcz, Poland.
authors.forename: Jozef
authors.initials: J
authors.lastname: Kaluzny