Measurement of central corneal thickness by high-resolution Scheimpflug imaging, Fourier-domain optical coherence tomography and ultrasound pachymetry

被引:87
作者
Chen, Shihao [2 ,3 ]
Huang, Jinhai [2 ,3 ]
Wen, Daizong [2 ,3 ]
Chen, Wuhe [2 ,3 ]
Huang, David [4 ]
Wang, Qinmei [1 ,2 ,3 ]
机构
[1] Wenzhou Med Coll, Affiliated Eye Hosp, Sch Optometry & Ophthalmol, Wenzhou 325027, Zhejiang, Peoples R China
[2] Wenzhou Med Coll, Hosp Eye, Wenzhou 325027, Zhejiang, Peoples R China
[3] Minist Hlth PR China, Key Lab Vis Sci, Wenzhou, Zhejiang, Peoples R China
[4] Univ So Calif, Keck Sch Med, Ctr Ophthalm Opt & Lasers, Doheny Eye Inst, Los Angeles, CA 90033 USA
关键词
agreement; cornea thickness; optical coherence tomography; repeatability; reproducibility; rotating Scheimpflug imaging; IN-SITU KERATOMILEUSIS; ORBSCAN-II; OCULUS PENTACAM; EXTENDED WEAR; CONTACT-LENS; REPEATABILITY; CAMERA; REPRODUCIBILITY; AGREEMENT; SYSTEM;
D O I
10.1111/j.1755-3768.2010.01947.x
中图分类号
R77 [眼科学];
学科分类号
100212 ;
摘要
Purpose: To compare the repeatability and reproducibility of central corneal thickness (CCT) measurements by high-resolution (HR) rotating Scheimpflug imaging and Fourier-domain optical coherence tomography (FD-OCT). CCT measurements were compared to those determined by ultrasound pachymetry (UP). Methods: In 35 healthy eyes, intra-observer repeatability for HR Scheimpflug (Pentacam) and FD-OCT (RTVue) systems was determined in consecutive images taken by an observer in the shortest time possible. Imaging was repeated again by a second observer to evaluate inter-observer reproducibility. The CCT measurements were compared among Scheimpflug, FD-OCT and UP images. Results: Mean coefficients of repeatability were 0.48% for Scheimpflug and 0.26% for FD-OCT. For Scheimpflug, the coefficient of inter-operator reproducibility was 0.87%. For FD-OCT, the coefficient of inter-operator reproducibility was 0.45%. The CCT measurements by Scheimpflug, OCT and UP images were (mean +/- standard deviation) 521.7 +/- 27.6 mu m, 510.8 +/- 28.6 mu m and 516.5 +/- 27.6 mu m, respectively. The differences between instruments were statistically significant. The 95% limits of agreement in CCT were -0.7 to 22.5 mu m for Pentacam-OCT, -13.4 to 24.0 mu m for Pentacam-UP and -26.7 to 15.4 mu m for OCT-UP. There was a high degree of correlation between CCT measured by all 3 methods. Conclusion: Noncontact measurements of CCT with HR Scheimpflug and FD-OCT systems yielded excellent repeatability and reproducibility and can be used interchangeably. Although both devices were comparable with UP; in clinical practice, the measurements acquired by optical modalities are not directly interchangeable with UP measurements.
引用
收藏
页码:449 / 455
页数:7
相关论文
共 35 条
[1]   Comparison between central corneal thickness measurements by oculus pentacam and ultrasonic pachymetry [J].
Al-Mezaine H.S. ;
Al-Amro S.A. ;
Kangave D. ;
Sadaawy A. ;
Wehaib T.A. ;
Al-Obeidan S. .
International Ophthalmology, 2008, 28 (5) :333-338
[2]  
BAILEY IL, 1991, INVEST OPHTH VIS SCI, V32, P422
[3]   Central corneal thickness measurement with the Pentacam Scheimpflug system, optical low-coherence reflectometry pachymeter, and ultrasound pachymetry [J].
Barkana, Y ;
Gerber, Y ;
Elbaz, U ;
Schwartz, S ;
Ken-Dror, G ;
Avni, I ;
Zadok, D .
JOURNAL OF CATARACT AND REFRACTIVE SURGERY, 2005, 31 (09) :1729-1735
[4]   STATISTICAL METHODS FOR ASSESSING AGREEMENT BETWEEN TWO METHODS OF CLINICAL MEASUREMENT [J].
BLAND, JM ;
ALTMAN, DG .
LANCET, 1986, 1 (8476) :307-310
[5]   Reliability and repeatability of the Pentacam on corneal curvatures [J].
Chen, Davie ;
Lam, Andrew K. C. .
CLINICAL AND EXPERIMENTAL OPTOMETRY, 2009, 92 (02) :110-118
[6]   Comparison of corneal thickness measurements by ultrasound and scheimpflug photography in eyes that have undergone laser in situ keratomileusis [J].
Ciolino, Joseph B. ;
Khachikian, Steven S. ;
Belin, Michael W. .
AMERICAN JOURNAL OF OPHTHALMOLOGY, 2008, 145 (01) :75-80
[7]   Reproductivity and repeatability of central corneal thickness measurement in keratoconus using the rotating scheimpflug camera and ultrasound pachymetry [J].
De Sanctis, Ugo ;
Missolungi, Alessandro ;
Mutani, Bernardo ;
Richiardi, Lorenzo ;
Grignolo, Federico M. .
AMERICAN JOURNAL OF OPHTHALMOLOGY, 2007, 144 (05) :712-718
[8]   Graft central thickness measurement by rotating Scheimpflug camera and ultrasound pachymetry after penetrating keratoplasty [J].
de Sanctis, Ugo ;
Missolungi, Alessandro ;
Mutani, Bernardo ;
Grignolo, Federico M. .
OPHTHALMOLOGY, 2007, 114 (08) :1461-1468
[9]   Reproducibility of RTVue Retinal Nerve Fiber Layer Thickness and Optic Disc Measurements and Agreement with Stratus Optical Coherence Tomography Measurements [J].
Gonzalez-Garcia, Alberto O. ;
Vizzeri, Gianmarco ;
Bowd, Christopher ;
Medeiros, Felipe A. ;
Zangwill, Linda M. ;
Weinreb, Robert N. .
AMERICAN JOURNAL OF OPHTHALMOLOGY, 2009, 147 (06) :1067-1074
[10]   Central and peripheral corneal thickness measurement with Orbscan II and topographical ultrasound pachymetry [J].
González-Méijome, JM ;
Cerviño, A ;
Yebra-Pimentel, E ;
Parafita, MA .
JOURNAL OF CATARACT AND REFRACTIVE SURGERY, 2003, 29 (01) :125-132