레이저 각막두께측정계 각막형태검사와 초음파를 이용한 각막두께측정비교

• Published in: Daihan angwa haghoi jabji Vol. 47; no. 1; pp. 19 - 24
• Main Authors: 최시환, Si Hwan Choi, 김정훈, Jeong Hoon Kim, 한남수, Nam Su Han, 조영준, Young Joon Jo, 이성복, Seong Bok Lee
• Format: Journal Article
• Language: Korean
• Published: 대한안과학회 31.01.2006
• Subjects: Corneal thickness; OLCR; Optical Low Coherence Reflectometry; Orbscan system; Pachymeter; Ultrasound pachymeter; 안과학; Pachymeter; Orbscan system; Corneal thickness; OLCR (Optical Low Coherence Reflectometry); Ultrasound pachymeter
• ISSN: 0378-6471; 2092-9374

목적 : Optical Low Coherence Reflectometry (OLCR)로 측정한 각막두께가 Orbscan system과 초음파 각막두께측정계인 Mentor와 IOPac으로 측정한 각막두께와 비교해 정확성과 재현성에 차이가 있는지를 알아보고자 한다. 대상과 방법 : 정상인 그룹 78안, LASIK 수술을 받은 그룹 36안을 네 검사장치로 두 검사자가 각 5회씩 측정하여 평균값을 각막두께측정값으로 정하였고, 검사자내의 재현성을 알아보기 위해 2일후 정상인 24안을 재측정하였다. 결과 : 정상인의 평균각막두께는 OLCR 536.3±23.8 µm, Orbscan system 542.4±25.3 µm, Mentor 535.4±23.7 µm, IOPac 534.2±24.1 µm이며, LASIK환자에서도 각각 487.3±30.8 µm, 492.5±36.5 µm, 487.5±30.8 µm, 485.3±30.8 µm으로 각 기계의 측정값 사이에 통계적으로 유의한 차이를 보이지 않았고, 검사자간 및 검사자내의 재현성 결과에서도 네 기계 모두 높은 재현성을 나타냈다. 결론 : OLCR은 Orbscan system과 초음파 각막두께측정계와 유사한 각막두께측정값을 나타냈으며 재현성 측면에서도 기존의 각막두께측정계와 차이를 보이지 않았다. <한안지 47(1):19-24, 2006> Purpose: To investigate the accuracy and reproducibility of Optical Low Coherence Reflectometry (OLCR) corneal thickness measurements compared with the Orbscan system and ultrasound pachymeter (IOPac, Mentor). Methods: Two examiners measured corneal thicknesses of 78 normal eyes and in 36 eyes that had undergone LASIK, and five sequential measurements of corneal thickness with OLCR, Orbscan system, Mentor, and IOPac were performed. Remeasurements of corneal thickness in 24 normal eyes were performed after two days to investigate intra-examiner reproducibility. Results: The average corneal thickness measured in normal subjects was 536.3±23.8 µm in OLCR, 542.4±25.3 µm in the Orbscan system, 535.4±23.7 µm in Mentor, and 534.2±24.1 µm in IOPac. The average corneal thickness measured in patients who had undergone LASIK was 487.3±30.8 µm in OLCR, 492.5±36.5 µm in the Orbscan system, 487.5±30.8 µm in Mentor, and 485.3±30.8 µm in IOPac. There was no statistically significant difference between the four pachymeters. The inter-examiner and intra-examiner reproducibilities were shown to be highly reliable. Conclusions: The OLCR showed similar measurments of corneal thickness with the Orbscan system and ultrasound pachymeter, and showed no difference in reproducibility with different examiners. J Korean Ophthalmol Soc 47(1):19-24, 2006 KCI Citation Count: 3