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The precision and agreement of corneal thickness and keratometry measurements with SS-OCT versus Scheimpflug imaging

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Eye and Vision 2020年第5期7卷 300-311页

作者： Yune Zhao Ding Chen Giacomo Savini Qing Wang Hongfang Zhang Yili Jin Benhao Song Rui Ning Jinhai Huang Chenyang Mei School of Ophthalmology and Optometry and Eye Hospital Wenzhou Medical UniversityWenzhouZhejiangChina Key Laboratory of Vision Science Ministry of Health P.R.ChinaWenzhouZhejiangChina G.B.Bietti Foundation IRCCS RomeItaly Eye Hospital of Wenzhou Medical University 270 West Xueyuan RoadWenzhou 325027ZhejiangChina

Purpose:To assess the repeatability and reproducibility of swept-source optical coherence tomography(SS-OCT)and Scheimpflug system and evaluate the agreement between the two systems in measuring multiple corneal regions in ***:Pachymetric and keratometric maps for both systems were ***,midperipheral and peripheral corneal thickness(CT),keratometry and astigmatism power vectors were *** three outcomes yielded by the same observer were used to assess intraobserver *** differences in the mean values provided by each observer were used to evaluate interobserver ***-subject standard deviation,test-retest repeatability(TRT)and coefficient of variation(CoV)were used to analyze the intraobserver repeatability and interobserver *** T-test and Bland-Altman were used to appraise interdevice ***:Seventy-eight eyes of 78 children were *** CoV was≤2.12 and 1.10%,respectively,for repeatability and *** and CoV were lower for central and paracentral CT measurements than for peripheral *** SS-OCT device generated higher precision when acquiring CT data,whereas Scheimpflug system showed higher reliability when measuring corneal *** the CT readings measured using SS-OCT were significantly thinner than Scheimpflug device(Pcorneal region and moderate for the paracentral and peripheral ***:The precision of CT measurements by SS-OCT was higher,while the reliability of keratometry measurements by the Scheimpflug system was higher in *** from the measured values in the central corneal region,the thickness and keratometry readings should not be considered interchangeable between the two systems.

关键词： Central corneal thickness Children Precision paracentral corneal thickness Peripheral corneal thickness Keratometry Swept-source optical coherence tomography Scheimpflug imaging

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