Comparison of corneal curvature and astigmatism measured in myopic eyes by Pentacam, Sirius and IOLMaster 700

IF 2.6 3区医学 Q2 ONCOLOGY

Photodiagnosis and Photodynamic Therapy Pub Date : 2025-09-11 DOI:10.1016/j.pdpdt.2025.105218

Han Song , Wei Yang , Jiani Wei , Xixi Wang

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引用次数: 0

Abstract

Purpose

To compare and evaluate the correlation and agreement of three different anterior segment analysis systems in measuring corneal curvature and astigmatism among healthy myopic subjects.

Methods

This study recruited myopic patients between Jan 2021 and Dec 2023 (252 myopia patients in total). After obtaining informed consent, corneal curvature and astigmatism were measured using the Pentacam, Sirius, and IOLMaster 700 anterior segment analysis systems. The degree and axis of astigmatism were incorporated into the Fourier vector formula to calculate vertical/horizontal astigmatism(J0) and oblique astigmatism in the 45°direction(J45) values. Statistical analyses were performed to assess the differences, correlations, and consistencies of the measurement results obtained from the three devices.

Results

No significant differences were observed in flat corneal curvature(Kf), steep corneal curvature(Ks), mean corneal curvature(Km), and J0 values measured by the Pentacam, Sirius, and IOLMaster 700 devices (p > 0.05). However, a significant difference was noted in J45 values (p < 0.05), J45 measured by IOLMaster 700 is significantly lower than that measured by Pentacam and Sirius. The mean values of Kf, Ks, Km, J0, and J45 measured by the three devices exhibited positive correlations (p < 0.001). Bland-Altman analysis demonstrated good consistency for Kf, Ks, Km, J0, and J45 measurements across the three instruments.

Conclusions

The mean values of Kf, Ks, Km, J0, and J45 measured by the three anterior segment analysis systems are positively correlated and demonstrate good agreement. However, there are significant differences in J45 values, this difference may affect the axial evaluation of astigmatism, and attention should be paid to the specificity when measuring oblique astigmatism, and suggesting that the same device should be selected for evaluation and follow-up in practical clinical work.

查看原文本刊更多论文

Pentacam、Sirius和IOLMaster 700测量近视眼角膜曲率和散光的比较。

目的：比较和评价三种不同的前节分析系统测量健康近视受试者角膜曲率和散光的相关性和一致性。方法：本研究招募2021年1月至2023年12月的近视患者（共252例）。在获得知情同意后，使用Pentacam、Sirius和IOLMaster 700前节分析系统测量角膜曲率和散光。将像散度和像散轴纳入傅里叶矢量公式，计算垂直/水平像散（J0）和45°方向的斜像散（J45）值。进行统计分析以评估从三种设备获得的测量结果的差异、相关性和一致性。结果：Pentacam、Sirius和IOLMaster 700装置测量的平直角膜曲率（Kf）、陡峭角膜曲率（Ks）、平均角膜曲率（Km）和J0值无显著差异（p < 0.05）。结论：三种前段分析系统测量的Kf、Ks、Km、J0和J45的平均值呈正相关，且具有良好的一致性。但J45值存在显著差异，这种差异可能会影响轴向散光的评价，在测量斜向散光时应注意其特异性，建议在临床实际工作中选择相同的仪器进行评价和随访。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Photodiagnosis and Photodynamic Therapy ONCOLOGY-

CiteScore

5.80

自引率

24.20%

发文量

509

审稿时长

50 days

期刊介绍： Photodiagnosis and Photodynamic Therapy is an international journal for the dissemination of scientific knowledge and clinical developments of Photodiagnosis and Photodynamic Therapy in all medical specialties. The journal publishes original articles, review articles, case presentations, "how-to-do-it" articles, Letters to the Editor, short communications and relevant images with short descriptions. All submitted material is subject to a strict peer-review process.