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In Vivo Corneal Biomechanical Properties in a Selected Chinese Population, Measured Using the Corneal Visualization Scheimpflug Technology

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机构: [1]Capital Med Univ, Beijing Inst Ophthalmol, Beijing Ophthalmol & Visual Sci Key Lab, Beijing Tongren Eye Ctr,Beijing Tongren Hosp, Beijing, Peoples R China [2]Capital Med Univ, Beijing Chaoyang Hosp, Beijing, Peoples R China [3]Capital Med Univ, Beijing Adv Innovat Ctr Big Data Based Precis Med, Beihang Univ, Beijing, Peoples R China [4]First Peoples Hosp Xuzhou, Xuzhou, Jiangsu, Peoples R China
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关键词: CorVis ST repeatability reproducibility intraclass correlation coefficient correlation

摘要:
Purpose: To evaluate the repeatability and reproducibility of recalculated dynamic corneal response (DCR) parameters and the biomechanical-compensated intraocular pressure (bIOP) derived from the Corneal Visualization Scheimpflug Technology (Corvis ST), as well as to study the variations of DCR parameters and their relationship with demographic, and ocular characteristics.Methods: A total of 544 healthy subjects were recruited in this study and a series of ophthalmological examinations were performed on their right eyes. Three repeated measurements were obtained at 3-min intervals for 291 of the participants to ensure repeatability. A sum of 100 participants was examined twice within 2-h intervals using two different Corvis ST in the reproducibility study. The repeatability and reproducibility of 37 parameters, including 36 DCR parameters and bIOP, were assessed by the coefficient of repeatability (CR), coefficient of variation (CV), intraclass correlation coefficient (ICC), and within-subject standard deviation (sw). Pearson's correlation coefficients and stepwise multivariate linear regression models were performed to investigate whether the DCR parameters were related to demographic and ocular characteristics.Results: Of all the 37 parameters, 34 showed excellent (ICC >= 0.90) or good (ICC >= 0.75) repeatability while 27 of the 37 parameters showed excellent (ICC >= 0.90) or good (ICC >= 0.75) reproducibility. In particular, a CV of less than 20% was found for all DCR parameters and bIOP. A fraction of 14 out of 36 DCR parameters was selected for correlation analysis, based on measurement reliability and clinical relevance in referring to previous literature. Age was negatively associated with the Highest concavity delta arc length (HCdArcL) and peak distance (PD) but it positively correlated with the Whole Eye Movement Max Length (WEMML). Intraocular pressure (IOP) and central corneal thickness (CCT) were negatively associated with the deformation amplitude ratio (DARM) [1 mm], A1 Velocity (A1V), and PD, while positively related to the stiffness parameter at applanation 1 (SP-A1). The bIOP was negatively associated with A1V but positively associated with A2 Velocity (A2V). The anterior chamber volume (ACV) was negatively associated with the pachy slope (PS), WEMML, and SP-A1.Conclusion. The Corvis ST showed good precision for the repeatability and reproducibility of 36 DCR parameters and bIOP parameters in healthy eyes. The IOP, CCT, bIOP, Km, and ACV significantly influenced the DCR parameters of the eyes.

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出版当年[2021]版:
大类 | 3 区 工程技术
小类 | 2 区 综合性期刊
最新[2025]版:
大类 | 3 区 生物学
小类 | 3 区 生物工程与应用微生物 4 区 工程:生物医学
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出版当年[2020]版:
Q1 MULTIDISCIPLINARY SCIENCES
最新[2023]版:
Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Q2 ENGINEERING, BIOMEDICAL

影响因子: 最新[2023版] 最新五年平均 出版当年[2020版] 出版当年五年平均 出版前一年[2019版] 出版后一年[2021版]

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第一作者机构: [1]Capital Med Univ, Beijing Inst Ophthalmol, Beijing Ophthalmol & Visual Sci Key Lab, Beijing Tongren Eye Ctr,Beijing Tongren Hosp, Beijing, Peoples R China [2]Capital Med Univ, Beijing Chaoyang Hosp, Beijing, Peoples R China
通讯作者:
通讯机构: [1]Capital Med Univ, Beijing Inst Ophthalmol, Beijing Ophthalmol & Visual Sci Key Lab, Beijing Tongren Eye Ctr,Beijing Tongren Hosp, Beijing, Peoples R China [3]Capital Med Univ, Beijing Adv Innovat Ctr Big Data Based Precis Med, Beihang Univ, Beijing, Peoples R China
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