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KMID : 0360220110520010053
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Journal of the Korean Ophthalmological Society
2011 Volume.52 No. 1 p.53 ~ p.59
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Comparison and Repeatability of Anterior Segment Parameters Obtained by Galilei and Slit-lamp Optical Coherence Tomography
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Lee Won-Hyuk
Hwang Young-Hoon
Kim Se-Jong
Lee Sang-Mok
Yoo Chung-Kwon
Kim Yong-Yeon
Lee Joo-Hwa
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Abstract
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Purpose: To evaluate the repeatability and comparability of anterior chamber depth (ACD) and central corneal thickness (CCT) measurements obtained by Galilei dual Scheimpflug analyzer (Ziemer, Port, Switzerland) and slit-lamp optical coherence tomography (SL-OCT; Heidelberg Engineering, Dossenheim, Germany).
Methods: ACD and CCT were measured by Galilei and SL-OCT in 68 eyes of 68 healthy young subjects. Each measurement was performed 3 times by a single examiner, and the repeatability of 3 consecutive measurements was analyzed. ACD and CCT measurements were compared between the 2 devices.
Results: Both Galilei and SL-OCT showed high repeatability (ICCs ≥ 0.994) for ACD and CCT measurements. The mean ACD and CCT measured by Galilei were greater than SL-OCT measurements by 0.11 ± 0.09 mm and 14.01 ± 7.38 μm, respectively. The 95% limit of agreement values for ACD and CCT measurements were 0.36 mm, 27.66 μm, respectively, and were highly correlated (correlation coefficients ≥ 0.89, p < 0.001).
Conslusions: Although the repeatability of each device was high, ACD and CCT obtained by Galilei and SL-OCT were significantly different. These differences should be considered when interpreting ACD and CCT measurements obtained by the 2 devices.
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KEYWORD
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Anterior chamber depth, Central corneal thickness, Galilei dual Scheimpflug analyzer, Slit-lamp optical coherence tomography
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