Topcon KR-1W与iTrace角膜屈光力测量的精确性和一致性

数据集获取（Figshare）

• 源站标题：Precision (Repeatability and Reproducibility) and Agreement of Corneal Power Measurements Obtained by Topcon KR-1W and iTrace
• DOI：10.1371/journal.pone.0147086
• 发布日期：2016-01-18
• 文件数：4 个
• 文件总体积：211.87 KB
• 源站页面：https://plos.figshare.com/articles/dataset/_Precision_Repeatability_and_Reproducibility_and_Agreement_of_Corneal_Power_Measurements_Obtained_by_Topcon_KR_1W_and_iTrace_/1635689

命令行下载

curl -L -o "S1 Data.SAV" "https://ndownloader.figshare.com/files/6771486"
curl -L -o "S2 Data.SAV" "https://ndownloader.figshare.com/files/6771489"
curl -L -o "S3 Data.SAV" "https://ndownloader.figshare.com/files/6771492"
curl -L -o "S4 Data.SAV" "https://ndownloader.figshare.com/files/6771495"

文件清单

• S1 Data.SAV（90.77 KB）
• S2 Data.SAV（80.13 KB）
• S3 Data.SAV（21.28 KB）
• S4 Data.SAV（19.69 KB）

文件总体积 211.87 KB（源站 API 实测）。

数据说明

Purpose
To evaluate the repeatability and reproducibility of corneal power measurements obtained by Topcon KR-1W and iTrace, and assess the agreement with measurements obtained by Allegro Topolyzer and IOLMaster.
Methods
The right eyes of 100 normal subjects were prospectively scanned 3 times using all the 4 devices. Another observer performed additional 3 consecutive scans using the Topcon KR-1W and iTrace in the same session. About one week later, the first observer repeated the measurements using the Topcon KR-1W and iTrace. The steep keratometry (Ks), flat keratometry (Kf), mean keratometry (Km), J0 and J45 were analyzed. Repeatability and reproducibility of measurements were evaluated by the within-subject standard deviation (Sw), coefficient of variation (CoV), test-retest repeatability (2.77Sw), and intraclass correlation coefficient (ICC). Agreements between devices were assessed using Bland-Altman analysis and 95% limits of agreement (LoA).
Results
Intraobserver repeatability and interobserver and intersession reproducibility of the Ks, Kf and Km showed a CoV of no more than 0.5%, a 2.77Sw of 0.70 D or less, and an ICC of no less than 0.99. However, J0 and J45 showed poor intraobserver repeatability and interobserver and intersession reproducibility (all ICCs not greater than 0.446). Statistically significant differences existed between Topcon KR-1W and IOLMaster, Topcon KR-1W and iTrace, Topcon KR-1W and Topolyzer, iTrace and Topolyzer, iTrace and IOLMaster for Ks, Kf and Km measurements (all P Conclusions
The Ks, Kf and Km obtained by Topcon KR-1W and iTrace showed excellent intraobserver repeatability and interobserver and intersession reproducibility in normal eyes. The agreement between Topcon KR-1W and Topolyzer, Topcon KR-1W and IOLMaster, iTrace and Topolyzer, iTrace and IOLMaster, Topcon KR-1W and iTrace were not so good, they should not be interchangeable in clinical application. Given that the intraobserver repeatability and interobserver and intersession reproducibility of corneal astigmatism measurements obtained by Topcon KR-1W and iTrace were poor, it should be cautious that Topcon KR-1W and iTrace were applied for the preparation of tori

许可

CC BY 4.0

引用

学术使用请引用 DOI 10.1371/journal.pone.0147086（source: https://plos.figshare.com/articles/dataset/_Precision_Repeatability_and_Reproducibility_and_Agreement_of_Corneal_Power_Measurements_Obtained_by_Topcon_KR_1W_and_iTrace_/1635689）。