접촉식과 광학적 방식에 의한 전방깊이 측정값의 비교

• 영문명: Comparison of Anterior Chamber Depth Obtained from Applanation and Optical Principle Devices
• 발행기관: 대한안과학회
• 저자명: 박율리 황형빈 정성근,Yuli Park, MD, Hyung Bin Hwang, MD, Sung Kun Chung, MD, PhD
• 간행물 정보: 『대한안과학회지』Ophthalmological Society,volume54,number8, 1219~1226쪽, 전체 8쪽
• 주제분류: 의약학 > 기타의약학
• 파일형태: PDF
• 발행일자: 2013.08.15

영문 초록

Purpose: To assess the reproducibility and reliability of applanation A-scan ultrasonography (Pacscan 300A, Sonomed Inc., Chicago, IL, USA) and optical measurements with IOL Master^{® (Carl Zeiss Meditec, Germany), Pentacam® (Oculus, Wetzlar, Germany), and Orbscan II® (Orbtek Inc., Laredo, TX, USA) when measuring anterior chamber depth (ACD). Methods: In this study of 188 eyes of 94 patients, ACD estimation prior to cataract surgery was preformed by the applanation A-scan method and IOL Master®, Pentacam®, and Orbscan II® optical methods. Repeatability from each device was evaluated by coefficient of variation, standard deviation, and intraclass correlation coefficient. RM-ANOVA on Ranks was used to compare the differences in ACD among the devices. The Bland-Altman plot was performed to assess agreement in measurements between the devices. Results: The mean ACD according to the applanation A-scan method and IOL Master®, Pentacam®, and Orbscan II® optical methods were 2.89 ± 0.49 mm, 3.25 ± 0.45 mm, 3.21 ± 0.46 mm, and 3.19 ± 0.47 mm, respectively, and the differences were statistically significant (p < 0.01). The coefficient of variation for the 4 methods was 2.50% in the A-scan, 0.87% in the IOL Master®, 1.25% in the Pentacam®, and 1.04% with Orbscan II®, and reproducibility was higher with the optical principle devices. The correlation coefficient between A-scan and IOL Master® was 0.65, between IOL Master® and Pentacam® 0.91, between IOL Master® and Orbscan II® 0.90, between A-scan and Pentacam® 0.69, between A-scan and Orbscan II® 0.71, and between Pentacam® and Orbscan II® 0.93. Conclusions: Applanation A-scan provided lower measurements for ACD compared with IOL Master®, Pentacam® and Orbscan II®. There was good agreement between results obtained with the latter 3 methods, and reproducibility was high with optical measurements. The coefficient of variation was low for IOL Master®.}

키워드

Anterior chamber depth, A-scan, IOL Master Orbscan II Pentacam