J Korean Ophthalmol Soc > Volume 57(7); 2016 > Article
Journal of the Korean Ophthalmological Society 2016;57(7):1056-1062.
DOI: https://doi.org/10.3341/jkos.2016.57.7.1056    Published online July 15, 2016.
Comparison of Anterior Segment Measurements between Dual and Single Scheimpflug Camera.
Youngju An, Hyojin Kim, Choun Ki Joo
1Catholic Institute of Visual Science, College of Medicine, The Catholic University of Korea, Seoul, Korea. ckjoo@catholic.ac.kr
2Division of Health Science, Baekseok University, Cheonan, Korea.
3Department of Ophthalmology and Visual Science, College of Medicine, The Catholic University of Korea, Seoul, Korea.
두 샤임플러그 전안부사진기를 이용한 전안부 계측치의 비교
안영주1⋅김효진2⋅주천기1,3
가톨릭대학교 의과대학 시과학연구소1, 백석대학교 보건학부2, 가톨릭대학교 의과대학 안과 및 시과학교실3
Abstract
PURPOSE
To assess the degree of agreement of two rotating Scheimpflug cameras, Galilei G6 and Pentacam HR, in measuring corneal refractive power (K), anterior chamber depth (ACD), and central corneal thickness (CCT). METHODS: Measurement agreement was assessed in 40 eyes of 40 outpatients at our hospital. Measurements of anterior and posterior corneal refractive power (K), ACD, and CCT were compared between the Galilei G6 and Pentacam HR. RESULTS: For Galilei G6 (4 mm), Pentacam HR (3 mm) and Pentacam HR (4 mm), the anterior corneal refractive powers (K) were 44.35 ± 1.38 D, 44.09 ± 1.32 D, and 44.12 ± 1.35 D, respectively, and the posterior corneal refractive powers (K) were 6.39 ± 0.23 D, 6.45 ± 0.23 D, 6.45 ± 0.22 D. The differences in the results were statistically significant. The average ACD measurements using Galilei G6 and Pentacam HR were 3.26 ± 0.42 mm and 3.17 ± 0.42 mm, respectively, and the average CCT measurements were 556.65 ± 30.12 µm and 553.78 ± 29.42 µm. The differences in the measurements were statistically significant. In addition, ACD 95% limits of agreement (LoA) between Galilei G6 and Pentacam HR were in the range of -0.14~0.32 mm, and CCT 95% LoA were in the range of -12.54~18.29 µm. CONCLUSIONS: There were significant differences in measurements of anterior and posterior corneal refractive power (K), ACD, and CCT between the two cameras. Agreement analysis suggests that Galilei G6 and Pentacam HR should not be used interchangeably.
Key Words: Anterior chamber depth;Central corneal thickness;Corneal refractive power;Scheimpflug camera


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