샤임플러그-플라시도원반 방식 사진기와 새로운 파장가변 빛간섭단층촬영계의 전안부 계측치 비교
Comparison of Anterior Segment Measurements between Scheimpflug- Placido Camera and New Swept-source Optical Coherence Tomography
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초록
목적: 샤임플러그-플라시도원반 혼합방식의 전안부 사진기(SIRIUS® [Costruzione Strumenti Oftalmici, Florence, Italy])와 새로운 파장가변 빛간섭단층촬영계(ANTERION® [Heidelberg Engineering Inc., Heidelberg, Germany])을 이용하여 전안부 계측치를 비교해보고자 하였다. 대상과 방법: 총 74명, 101안을 대상으로 SIRIUS®와 ANTERION®으로 측정한 전안부 계측치를 분석하였다. 두 장비로 측정한 중심각막두께, 전방깊이, 각막곡률값, J0, J45 성분, 각막윤부직경을 비교하였다. 결과: SIRIUS®와 ANTERION®으로 측정한 중심각막두께는 각각 558.69 ± 44.65 및 540.26 ± 36.57 μm였고 통계적으로 유의한 차이와(p＜0.005), 높은 상관관계를 보였다(r=0.915). 전방깊이는 각각 3.34 ± 0.53 및 3.34 ± 0.51 mm (p=0.856)로 측정되었고 높은 상관관계를 보였다(r=0.966). 두 장비로 측정한 각막윤부직경(p＜0.005, r=0.875), 평균각막곡률값(p=0.017, r=0.967) 및 J0 성분(p＜0.005, r=0.933)은 모두 유의한 차이를 보였고 높은 상관관계를 보였다. 결론: SIRIUS®와 ANTERION®으로 측정한 전방깊이는 유의한 차이를 보이지 않았으나 중심각막두께, 각막윤부직경, 각막곡률값, J0 성분은 유의한 차이를 보여 두 장비는 임상에서 상호호환이 어려울 것으로 생각한다.
Abstract
Purpose: We compared anterior segment measurements obtained using a Scheimpflug-Placido topographer (SIRIUS®, Costruzione Strumenti Oftalmici, Florence, Italy) and a new anterior module for a swept-source optical coherence tomography system (ANTERION®, Heidelberg Engineering Inc., Heidelberg, Germany). Methods: Anterior segment measurements were evaluated in 74 eyes of 101 patients with the two devices. Central corneal thickness (CCT), anterior chamber depth (ACD), corneal refractive power (K), J0 (Jackson cross-cylinder with axes at 180° and 90°), J45 vector (Jackson cross-cylinder with axes at 45° and 135°), and white-to-white corneal diameter (WTW) measurements obtained using the SIRIUS® system and the new anterior segment module of ANTERION® were compared. Results: The mean CCTs measured by SIRIUS® and ANTERION® were 558.69 ± 44.65 and 540.26 ± 36.57 μm, respectively. The difference was statistically significant (p < 0.005), and there were high correlations between the two methods (r = 0.915, p < 0.001). The mean ACD measurements were 3.34 ± 0.53 and 3.34 ± 0.51 mm (p = 0.856), respectively, for SIRIUS® and ANTERION®. The measurements were strongly correlated (r = 0.966, p < 0.001). The measurements of WTW, total mean K, and J0 obtained with the two systems differed significantly (p < 0.005, p = 0.017, and p < 0.005, respectively), with high correlations between the two systems (r = 0.875, r = 0.967, and r = 0.933, respectively; all p < 0.001). Conclusions: There were significant differences in measurements of K, CCT, WTW, and J0 between the two devices. Agreement analysis suggests that SIRIUS® and ANTERION® should not be used interchangeably.
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