Dataset Information

Central and midperipheral corneal thickness measured with Scheimpflug imaging and optical coherence tomography.

ABSTRACT:

Purpose

To compare corneal thickness measurements using Pentacam (Oculus, Germany), Sirius (CSO, Italy), Galilei (Ziemer, Switzerland), and RTVue-100 OCT (Optovue Inc., USA).

Methods

Sixty-six eyes of 66 healthy volunteers were enrolled. Three consecutive measurements were performed with each device. The mean value of the three measurements was used for subsequent analysis. Central corneal thickness (CCT), thinnest corneal thickness (TCT), and midperipheral corneal thickness (MPCT; measured at superior, inferior, nasal, and temporal locations with a distance of 1 mm (CT2mm) or 2.5 mm (CT5mm) from the corneal apex) were analyzed. Differences and agreement between measurements were assessed using the repeated-measures analysis of variance (ANOVA) and Bland-Altman analyses, respectively.

Results

Statistically significant differences (p<0.001) among the four devices were revealed in CCT, TCT and CT2mm measurements. The CCT, TCT, and CT2mm values were ranked from the thickest to the thinnest as follows: Galilei>Sirius>Pentacam>RTVue OCT. For these measurements, agreement between measurements by Sirius and Pentacam was good, whereas Galilei overestimated and RTVue underestimated corneal thickness compared to Sirius and Pentacam. As regards CT5mm measurements, Pentacam provided the largest values, whereas RTVue OCT yielded the smallest values. Agreement of the CT5mm measurements was good between the Pentacam, Sirius, moderate between Galilei and the other two Scheimpflug systems, and poor between the RTVue OCT and the remaining devices.

Conclusions

The Pentacam and Sirius can be used interchangeably for CCT measurements, while the Galilei and RTVue systematically over- and underestimate CCT, respectively. The three Scheimpflug cameras, but not the RTVue, may be used interchangeably for MPCT measurements.

SUBMITTER: Huang J

PROVIDER: S-EPMC4031212 | biostudies-literature | 2014

REPOSITORIES: biostudies-literature

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Publications

Central and midperipheral corneal thickness measured with Scheimpflug imaging and optical coherence tomography.

Huang Jinhai J Ding Xixia X Savini Giacomo G Jiang Zhengxuan Z Pan Chao C Hua Yanjun Y Wu Fan F Feng Yifan Y Yu Ye Y Wang Qinmei Q

PloS one 20140522 5

<h4>Purpose</h4>To compare corneal thickness measurements using Pentacam (Oculus, Germany), Sirius (CSO, Italy), Galilei (Ziemer, Switzerland), and RTVue-100 OCT (Optovue Inc., USA).<h4>Methods</h4>Sixty-six eyes of 66 healthy volunteers were enrolled. Three consecutive measurements were performed with each device. The mean value of the three measurements was used for subsequent analysis. Central corneal thickness (CCT), thinnest corneal thickness (TCT), and midperipheral corneal thickness (MPCT ...[more]

PMID: 24854348

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Dataset Information

Central and midperipheral corneal thickness measured with Scheimpflug imaging and optical coherence tomography.

Purpose

Methods

Results

Conclusions

Publications

Central and midperipheral corneal thickness measured with Scheimpflug imaging and optical coherence tomography.

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