近视眼小切口晶状体摘除术后真角膜度数评估方法的比较。

IF 4.1 1区医学 Q1 OPHTHALMOLOGY

American Journal of Ophthalmology Pub Date : 2025-03-28 DOI:10.1016/j.ajo.2025.03.026

Xiaoling Fang , Chunxia Yu , Wenwen Xue , Jinhua Tao , Wenbo Yao , Liquan Zhao , Yulan Wang

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引用次数: 0

摘要

目的：比较不同角膜曲率参数在评估近视小切口晶状体摘除术（SMILE）患者角膜度数变化时的准确性。设计：前瞻性横断面试验。方法：选取上海市眼病防治中心行SMILE手术的48例患者89只眼。用Haigis、Shammas、Maloney和Actual Ka+p法计算出的校正参数，将角膜总屈光度（TCRP）和总角膜度数（TK）值与用临床病史法（CHM）获得的数据进行比较。我们还比较了手术引起的TCRP （ΔTCRP）和TK （ΔTK）的变化与角膜平面上球体等效物的变化（ΔSEco）。结果：SMILE术后TK值与CHM值差异最小（0.41±0.48 D）。TK （1.88 D）的95%一致限宽度最小，其次是Ka+p （1.94 D）。Pearson分析显示，各参数与CHM数据具有良好的相关性。ΔTK与ΔSEco之间的差异为0.42D， ΔTCRP与ΔSEco之间的差异为0.62D。95%一致限宽度ΔTK （1.88 D）和相关系数ΔTK（0.964）均大于ΔTCRP。另一例SMILE术后白内障手术的病例证实了上述观点的有效性（绝对误差为0.005 D）。结论：IOLMaster 700的TK参数能够准确、客观地评价SMILE术后角膜度数。

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Comparison of Corneal Power Assessment Methods for True Corneal Power After Myopic Small-Incision Lenticule Extraction

Purpose

We sought to compare the accuracy of different corneal curvature parameters in estimating corneal power change in eyes that underwent myopic small-incision lenticule extraction (SMILE).

Design

Prospective cross-sectional trial.

Methods

89 eyes of 48 patients who had undergone SMILE at Shanghai Eye Disease and Prevention & Treatment Center were enrolled. Total corneal refractive power (TCRP) and total keratometry (TK) values, along with corrected parameters calculated using the Haigis, Shammas, Maloney, and Actual K_a+p methods, were compared with data obtained using the clinical history method (CHM). We also compared the surgically induced changes in TCRP (ΔTCRP) and TK (ΔTK) to changes in the spherical equivalent on the corneal plane (ΔSEco).

Results

After SMILE, differences were smallest between values of TK (0.41 ± 0.48 D) and CHM. The width of the 95% limits of agreement of TK (1.88 D) was narrowest, followed by that of K_a+p (1.94 D). Pearson analysis showed that each parameter had a good correlation with CHM data. The differences between ΔTK and ΔSEco was 0.42 D, when between ΔTCRP and ΔSEco was 0.62 D. The width of the 95% limits of agreement of ΔTK (1.88 D) and the correlation coefficient of ΔTK (0.964) were greater than those of ΔTCRP. A separate case of cataract surgery following SMILE confirmed the validity of the above points in our study (the absolute error was 0.005 D).

Conclusions

The TK parameter of the IOLMaster 700 can provide accurate and objective corneal power evaluation after SMILE.

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来源期刊

American Journal of Ophthalmology 医学-眼科学

CiteScore

9.20

自引率

7.10%

发文量

406

审稿时长

36 days

期刊介绍： The American Journal of Ophthalmology is a peer-reviewed, scientific publication that welcomes the submission of original, previously unpublished manuscripts directed to ophthalmologists and visual science specialists describing clinical investigations, clinical observations, and clinically relevant laboratory investigations. Published monthly since 1884, the full text of the American Journal of Ophthalmology and supplementary material are also presented online at www.AJO.com and on ScienceDirect. The American Journal of Ophthalmology publishes Full-Length Articles, Perspectives, Editorials, Correspondences, Books Reports and Announcements. Brief Reports and Case Reports are no longer published. We recommend submitting Brief Reports and Case Reports to our companion publication, the American Journal of Ophthalmology Case Reports. Manuscripts are accepted with the understanding that they have not been and will not be published elsewhere substantially in any format, and that there are no ethical problems with the content or data collection. Authors may be requested to produce the data upon which the manuscript is based and to answer expeditiously any questions about the manuscript or its authors.