Repeatability and Interobserver Reproducibility of a Swept-Source Optical Coherence Tomography for Measurements of Anterior, Posterior, and Total Corneal Power
Abstract Introduction The aim of this work is to evaluate the intraobserver repeatability and interobserver reproducibility of corneal power measurements obtained with a swept-source optical coherence tomographer (CASIA 2, Tomey, Japan) in healthy subjects. Methods A total of 67 right eyes from 67 h...
| Main Authors: | , , , , , , , , , , |
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| Language: | English |
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Adis, Springer Healthcare
2023-10-01
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| Series: | Ophthalmology and Therapy |
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| Online Access: | https://doi.org/10.1007/s40123-023-00815-9 |
| _version_ | 1797630384017506304 |
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| author | Chak Seng Lei Xuanqiao Lin Rui Ning Jinjin Yu Xiaomin Huang Kexin Li Yiran Wang Giacomo Savini Domenico Schiano-Lomoriello Xingtao Zhou Jinhai Huang |
| author_facet | Chak Seng Lei Xuanqiao Lin Rui Ning Jinjin Yu Xiaomin Huang Kexin Li Yiran Wang Giacomo Savini Domenico Schiano-Lomoriello Xingtao Zhou Jinhai Huang |
| author_sort | Chak Seng Lei |
| collection | DOAJ |
| description | Abstract Introduction The aim of this work is to evaluate the intraobserver repeatability and interobserver reproducibility of corneal power measurements obtained with a swept-source optical coherence tomographer (CASIA 2, Tomey, Japan) in healthy subjects. Methods A total of 67 right eyes from 67 healthy subjects were enrolled. Two experienced observers measured each eye three times consecutively with the CASIA 2. Corneal power values were recorded as simulated keratometry, anterior, posterior, and total corneal power. Parameters were flattest keratometry (K f), steepest keratometry (K s), mean keratometry (K m), astigmatism magnitude, astigmatism power vectors J 0 and J 45. Intraobserver repeatability and interobserver reproducibility of the CASIA 2 were assessed by the within-subject standard deviation (S w), test–retest repeatability (TRT), coefficients of variation (CoV), and intraclass correlation coefficients (ICCs). Double-angle plots were used for astigmatism vector analysis. Results The CASIA 2 had high repeatability for all corneal power values, with S w values ≤ 0.17 diopters (D), TRT ≤ 0.46 D, and ICCs ranging from 0.866 to 0.998. Interobserver reproducibility was also high, showing all S w values ≤ 0.10 D, TRT ≤ 0.27 D, and ICCs ≥ 0.944. The reproducibility of the average of three consecutive measurements (S w 0.01–0.10 D, TRT 0.03–0.27 D, ICC 0.944–0.998) was higher than the reproducibility of single measurements (S w 0.01–0.17 D, TRT 0.03–0.47 D, ICC 0.867–0.996). Conclusions The CASIA 2 showed high intraobserver repeatability and interobserver reproducibility for anterior, posterior, and total corneal power measurements in 6.0-mm diameter area. In addition, we suggest that using the average of three consecutive measurements can improve reproducibility between observers, compared to single measurements only. |
| first_indexed | 2024-03-11T11:07:30Z |
| format | Article |
| id | doaj.art-6fd39d711fa4448291ed28c03701b568 |
| institution | Directory Open Access Journal |
| issn | 2193-8245 2193-6528 |
| language | English |
| last_indexed | 2024-03-11T11:07:30Z |
| publishDate | 2023-10-01 |
| publisher | Adis, Springer Healthcare |
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| series | Ophthalmology and Therapy |
| spelling | doaj.art-6fd39d711fa4448291ed28c03701b5682023-11-12T12:09:08ZengAdis, Springer HealthcareOphthalmology and Therapy2193-82452193-65282023-10-011263263327910.1007/s40123-023-00815-9Repeatability and Interobserver Reproducibility of a Swept-Source Optical Coherence Tomography for Measurements of Anterior, Posterior, and Total Corneal PowerChak Seng Lei0Xuanqiao Lin1Rui Ning2Jinjin Yu3Xiaomin Huang4Kexin Li5Yiran Wang6Giacomo Savini7Domenico Schiano-Lomoriello8Xingtao Zhou9Jinhai Huang10Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan UniversityEye Hospital and School of Ophthalmology and Optometry, Wenzhou Medical UniversityEye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan UniversityEye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan UniversityEye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan UniversityEye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan UniversityEye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan UniversityIRCCS Bietti FoundationIRCCS Bietti FoundationEye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan UniversityEye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan UniversityAbstract Introduction The aim of this work is to evaluate the intraobserver repeatability and interobserver reproducibility of corneal power measurements obtained with a swept-source optical coherence tomographer (CASIA 2, Tomey, Japan) in healthy subjects. Methods A total of 67 right eyes from 67 healthy subjects were enrolled. Two experienced observers measured each eye three times consecutively with the CASIA 2. Corneal power values were recorded as simulated keratometry, anterior, posterior, and total corneal power. Parameters were flattest keratometry (K f), steepest keratometry (K s), mean keratometry (K m), astigmatism magnitude, astigmatism power vectors J 0 and J 45. Intraobserver repeatability and interobserver reproducibility of the CASIA 2 were assessed by the within-subject standard deviation (S w), test–retest repeatability (TRT), coefficients of variation (CoV), and intraclass correlation coefficients (ICCs). Double-angle plots were used for astigmatism vector analysis. Results The CASIA 2 had high repeatability for all corneal power values, with S w values ≤ 0.17 diopters (D), TRT ≤ 0.46 D, and ICCs ranging from 0.866 to 0.998. Interobserver reproducibility was also high, showing all S w values ≤ 0.10 D, TRT ≤ 0.27 D, and ICCs ≥ 0.944. The reproducibility of the average of three consecutive measurements (S w 0.01–0.10 D, TRT 0.03–0.27 D, ICC 0.944–0.998) was higher than the reproducibility of single measurements (S w 0.01–0.17 D, TRT 0.03–0.47 D, ICC 0.867–0.996). Conclusions The CASIA 2 showed high intraobserver repeatability and interobserver reproducibility for anterior, posterior, and total corneal power measurements in 6.0-mm diameter area. In addition, we suggest that using the average of three consecutive measurements can improve reproducibility between observers, compared to single measurements only.https://doi.org/10.1007/s40123-023-00815-9Swept-source optical coherence tomographerCorneal powerBiometry |
| spellingShingle | Chak Seng Lei Xuanqiao Lin Rui Ning Jinjin Yu Xiaomin Huang Kexin Li Yiran Wang Giacomo Savini Domenico Schiano-Lomoriello Xingtao Zhou Jinhai Huang Repeatability and Interobserver Reproducibility of a Swept-Source Optical Coherence Tomography for Measurements of Anterior, Posterior, and Total Corneal Power Ophthalmology and Therapy Swept-source optical coherence tomographer Corneal power Biometry |
| title | Repeatability and Interobserver Reproducibility of a Swept-Source Optical Coherence Tomography for Measurements of Anterior, Posterior, and Total Corneal Power |
| title_full | Repeatability and Interobserver Reproducibility of a Swept-Source Optical Coherence Tomography for Measurements of Anterior, Posterior, and Total Corneal Power |
| title_fullStr | Repeatability and Interobserver Reproducibility of a Swept-Source Optical Coherence Tomography for Measurements of Anterior, Posterior, and Total Corneal Power |
| title_full_unstemmed | Repeatability and Interobserver Reproducibility of a Swept-Source Optical Coherence Tomography for Measurements of Anterior, Posterior, and Total Corneal Power |
| title_short | Repeatability and Interobserver Reproducibility of a Swept-Source Optical Coherence Tomography for Measurements of Anterior, Posterior, and Total Corneal Power |
| title_sort | repeatability and interobserver reproducibility of a swept source optical coherence tomography for measurements of anterior posterior and total corneal power |
| topic | Swept-source optical coherence tomographer Corneal power Biometry |
| url | https://doi.org/10.1007/s40123-023-00815-9 |
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