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H. Cho, R. Jun, K. Choi; Ultrasound Biomicroscopy (UBM Plus, Model P45, Pardigm®) Intraobserver Reproducibility and Agreement of Measurements . Invest. Ophthalmol. Vis. Sci. 2003;44(13):3606.
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© ARVO (1962-2015); The Authors (2016-present)
Purpose: To evaluate intraobserver reproducibility of measurements in images obtained by the ultrasound biomicroscopy(UBM plus, model P45, Paradigm®) and estimate the agreement of measurements by ultrasound biomicroscopy and A-scan ultraound(model P37, Paradigm®,Inc., Utah, USA) Methods: The anterior segment images of fifteen normal patients were obtained twice by single examiner. Six different parameters were measured in each image . Among the parameters, anterior chamber depth was compared with that measured by A-scan ultrasound Results: The intraobserver reproducibility was high for all six parameters that includes central corneal thickness(coefficient of variation (%) 2.80), anterior chamber depth (coefficient of variation (%) 1.20), anterior chamber angle (coefficient of variation (%) 4.01), scleral thickness (coefficient of variation (%) 4.28), trabecular meshwork-iris distance (coefficient of variation (%) 6.09) and angle opening distance (AOD500, coefficient of variation (%) 6.09). The agreement between ultrasound biomicroscopy and A-scan ultrasound in measuring the anterior chamber depth was statistically significant(correlation coefficient = 0.79, p=0.002) Conclusions: The measurements of anterior segment parameters by ultrasound biomicroscopy has high reproducibility and will be useful in evaluating the anterior segment structure
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