title: High-frequency ultrasound biomicroscopy versus ultrasound and optical pachymetry for the measurement of corneal thickness.
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.
authors.affiliation: Department of Opthalmology and Visual Science, Scientific Institute H.S. Raffaele, University of Milano, Milano, Italy.
authors.forename: L
authors.initials: L
authors.lastname: Pierro
authors.forename: E
authors.initials: E
authors.lastname: Conforto
authors.forename: A G
authors.initials: AG
authors.lastname: Resti
authors.forename: R
authors.initials: R
authors.lastname: Lattanzio
mesh_terms: D000886:Anthropometry; D003315:Cornea / Q000033:anatomy & histology* / Q000000981:diagnostic imaging; D003941:Diagnostic Techniques, Ophthalmological; D006801:Humans; D015203:Reproducibility of Results; D014463:Ultrasonography / Q000379:methods*