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Sirius scheimpflug–placido versus ultrasound pachymetry for central corneal thickness:meta-analysis

Eye and Vision 2021年第4期8卷 36-46页

作者： Yili Jin Colm McAlinden Yong Sun Daizong Wen Yiran Wang Jinjin Yu Ke Feng Benhao Song Qinmei Wang Shihao Chen Jinhai Huang School of Ophthalmology and Optometry and Eye Hospital Wenzhou Medical UniversityWenzhouZhejiangChina Department of Ophthalmology Singleton HospitalSwansea Bay University Health BoardSwanseaUK Shenzhen Hospital of Integrated Traditional and Western Medicine ShenzhenChina Key Laboratory of Vision Science Ministry of Health P.R.ChinaWenzhouZhejiangChina Eye Hospital of Wenzhou Medical University 270 West Xueyuan RoadWenzhou 325027ZhejiangChina

Background:To compare the difference in central corneal thickness(CCT)measurements in normal eyes between a rotating scheimpflug camera combined with a placido-disk corneal topographer(Sirius,CSO,Italy)and ultrasound pachymetry(USP).Methods:A systematic literature search was conducted for relevant studies published on PubMed,Medline,EMBASE,and the Cochrane Library and *** from inception to August 1st,*** outcome measures were CCT measurements between Sirius and USP.A random effects model was used to pool CCT ***:A total of twelve studies involving 862 eyes were included in this *** meta-analysis found CCT measurements between Sirius and USP to be statistically significantly different(Pscheimpflug-placido topographer were statistically significantly lower than ***,it may be argued that the mean difference of 11.26μm is not a clinically significant difference.

关键词： Meta-analysis Central corneal thickness scheimpflug-placido topographer Ultrasound Pachymetry

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Comparison of central corneal thickness measurements with three new optical devices and a standard ultrasonic pachymeter

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International Journal of Ophthalmology(English edition) 2014年第2期7卷 302-308页

作者： Hasan Ali Bayhan Seray Aslan Bayhan Iz.zet Can Department of Ophthalmology Bozok University Faculty of Medicine

AIM:To compare the RTVue spectral optical coherence tomography(SD-OCT),Sirius scheimpflug-placido topographer,Lenstar optical low coherence reflectometry(OLCR)and ultrasound pachymetry(USP)devices in terms of their agreement and repeatability of measuring central corneal thickness(CCT).METHODS:In this prospective study,50 eyes of 50patients were *** repeated measures were obtained using SD-OCT,scheimpflug-placido topographer and USP and five measurements were determined with the ***-Altman plots were used to assess agreement among the instruments,and 95%limits of agreement(LoA)for each comparison were ***-examiner repeatability was assessed using intraclass correlation coefficients(ICCs).RESULTS:The mean CCT by SD-OCT,scheimpflugplacido topographer,OLCR,and USP were 525.90±34.08μm,525.92±34.10μm,530.30±35.62μm,and543.50±37.11μm *** 4 modalities of CCT measurements correlated closely with each other,with Pearson correlation coefficients ranging from 0.977 *** mean differences(and upper/lower LoA)for CCT measurements were-0.05±6.77μm(13.3/-13.3)between SD-OCT and scheimpflug-placido topographer,4.38±3.79μm(11.8/-3.1)between OLCR and SD-OCT,4.38±6.03μm(16.2/-7.5)between OLCR and scheimpflugplacido topographer,13.20±6.46μm(25.9/0.5)between USP and OLCR,17.59±6.76μm(30.8/4.3)between USP and SD-OCT,and 17.58±8.13μm(33.5/1.6)between USP and scheimpflug-placido ***-examiner repeatability was excellent for all devices with ICCs>***:For most practical purposes,CCT measurements with the RTVue,Sirius and Lenstar can be used *** highly correlated,CCTmeasurement differences between USP and these 3optical instruments can be significant depending on the clinical situation.

关键词： central corneal thickness optical low coherence reflectometry spectral optical coherence tomography scheimpflug-placido topographer

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