Repeatability and Reproducibility of Intraocular Pressure and Dynamic Corneal Response Parameters Assessed by the Corvis ST.
Repeatability and Reproducibility of Intraocular Pressure and Dynamic Corneal Response Parameters Assessed by the Corvis ST.
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DOI：
10.1155/2017/8515742
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发表时间：
2017
影响因子：
1.9
通讯作者：
Ambrósio R Jr
中科院分区：
文献类型：
--
作者：
Lopes BT;Roberts CJ;Elsheikh A;Vinciguerra R;Vinciguerra P;Reisdorf S;Berger S;Koprowski R;Ambrósio R Jr
评估Corvis ST(Oculus，Wetzlar，德国)测量的动态角膜反应参数的重复性和再现性。从32名健康志愿者中随机选择一只眼进行Corvis ST检查。三种不同的设备以交替随机的顺序使用，在每个受试者的每个设备上进行三次测量。测量标准眼压(IOP)、生物力学补偿性眼压(BIOP)和DCR参数。测定受试者内标准差(ζw)和变异系数(CV)。在压力指数方面，重复性ζw小于1 (眼压0.98和BIOP 0.89)，变异系数分别为6.6%和6.1%。在重复性方面，ζw约为1 (眼压为1.12，BIOP为1.05)，变异系数分别为7.6%和7.1%。大多数DCR指标的重复性变异系数均在4%以下。在重复性方面，大多数指标的变异系数都在6%以下。1 mm和积分半径内的变形幅度(DA)比均小于4%(分别为1.2%和3.8%)。Corvis ST对正常眼的眼压测量和DCR测量显示出良好的精确度(重复性和再现性)。
To assess the repeatability and reproducibility of dynamic corneal response parameters measured by the Corvis ST (Oculus, Wetzlar, Germany). One eye randomly selected from 32 healthy volunteers was examined by the Corvis ST. Three different devices were used in an alternated random order for taking three measurements at each device in each subject. Standard intraocular pressure (IOP), the biomechanical-compensated IOP (bIOP), and DCR parameters were evaluated. The within-subject standard deviation (ζw) and coefficient of variation (CV) were assessed. Regarding pressure indices, the ζw was below 1 mmHg for repeatability (0.98 for IOP and 0.89 for bIOP) and the CV was 6.6% for IOP and 6.1% for bIOP. For reproducibility, the ζw was around 1 mmHg (1.12 for IOP and 1.05 for bIOP) and the CV was 7.6% for IOP and 7.1% for bIOP. Most of DCR indices presented CV for repeatability below 4%. For reproducibility, the CV of most of the indices were below 6%. The deformation amplitude (DA) ratio in 1 mm and integrated radius were below 4% (1.2% and 3.8%, resp.). The Corvis ST showed good precision (repeatability and reproducibility) for IOP measurements and for DCR in healthy eyes.