KMID : 0360220090500121847
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Journal of the Korean Ophthalmological Society 2009 Volume.50 No. 12 p.1847 ~ p.1852
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Comparison of Measurement of Anterior Segment Parameters Between Scheimpflug Camera and Ultrasound Biomicroscopy
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Park Yong-Sik
Ahn Hyun-seok Kim Na-Rae Ma Kyung-Tak Hong Sa-Min Seong Gong-Je Kim Chan-Yun
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Abstract
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Purpose: To evaluate the clinical reliability of Pentacam¨Þ by comparing anterior chamber parameters measured by Oculus Pentacam system (Oculus Inc., Germany) and Hi-scan ultrasound biomicroscopy (OPTIKON 2000, Rome, Italy) in primary angle closure (PAC) and normal patients.
Methods: A prospective study was performed from June 2006 to January 2007. Fifty-one eyes in 26 primary angle-closure patients and 39 eyes in 20 normal control patients, for a total of 90 eyes of 46 patients were recruited from glaucoma out-patient clinics. The correlation and agreement of both measurements of anterior chamber depth and anterior chamber angle measured by UBM and Pentacam¨Þ were calculated. Sensitivity and specificity of each tool were also compared and the diagnostic value of angle closure was examined.
Results: Anterior chamber depth measured by UBM and Pentacam¨Þ showed strong correlation in the normal control group (r=0.821) and PAC group (r=0.957). Anterior chamber angle showed moderate correlation in the normal control group (r=0.523) and PAC group (r=0.456) while good agreement was also observed. In diagnosing angle closure, anterior chamber measurements appear similar in UBM and Pentacam¨Þ using the ROC curve (AUC of UBM, 0.942; AUC of Pentacam¨Þ, 0.931).
Conclusions: Pentacam¨Þ shows high to moderate correlation of anterior chamber measurements and good agreement compared with UBM. Pentacam¨Þ shows similar ability in diagnosing angle closure compared with UBM and thus is expected to be a good tool in diagnosing angle closure.
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KEYWORD
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Anterior chamber angle, Anterior chamber depth, Pentacam, Primary angle-closure glaucoma (PACG), Ultrasound biomicroscope (UBM)
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