High-Frequency Ultrasound Biomicroscopy versus Ultrasound and Optical Pachymetry for the Measurement of Corneal Thickness
- 1 July 1998
- journal article
- research article
- Published by S. Karger AG in Ophthalmologica
- Vol. 212 (Suppl. 1) , 1-3
- https://doi.org/10.1159/000055408
Abstract
The aim of this study was to correlate central corneal thickness measurements obtained using optical as well as ultrasound pachymeters and high-frequency ultrasound biomicroscopy (UBM), assuming UBM as reference. Each measurement was performed on 32 patients (60 eyes) by three observers unaware of the other''s results, on 3 different days. Pearson correlation was used. A strong correlation was found between UBM and ultrasound pachymetry measurements (r=0.858), a weaker one between UBM and optical pachymetry (r=0.506). Optical versus ultrasound measurements were poorly correlated (r=0.540). Each correlation was statistically significant (p<0.001). UBM can be used as an accurate and reproducible method for determining corneal thickness.Keywords
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