Repeatability of Automatic Measurements by an Anterior Segment Swept-Source OCT Biometer in Patients With Keratoconus.

IF 2.9 3区医学 Q1 OPHTHALMOLOGY

Journal of refractive surgery Pub Date : 2024-07-01 DOI:10.3928/1081597X-20240514-03

Irene Abicca, Domenico Schiano-Lomoriello, Marta Gilardi, Daniela Giannini, Valentin Dinu, Catarina Coutinho, Giacomo Savini

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引用次数: 0

Abstract

Purpose: To evaluate the repeatability of automatic measurements of a new anterior segment optical coherence tomographer (ANTERION; Heidelberg Engineering) and their agreement with an anterior segment optical coherence tomography device combined with Placido disc corneal topography (MS-39; CSO) in patients affected by keratoconus.

Methods: Fifty-four consecutive patients were included. Three measurements were performed with the ANTERION and one with the MS-39. Repeatability was assessed by means of within-subject standard deviation, coefficient of variation (CoV), and intraclass correlation coefficient (ICC). Agreement was investigated with the 95% limits of agreement. The paired t-test and Wilcoxon matched-pairs test were performed to compare the measurements of the different devices.

Results: Repeatability of ANTERION measurements was high, with an ICC greater than 0.98 for all parameters. Many parameters revealed a CoV of less than 1% and a CoV within 5% was obtained for astigmatism measurements. The ANTERION measured a significantly higher corneal power and the MS-39 more negative posterior keratometric values. These differences were mirrored by a moderate agreement for mean simulated keratometry and poor agreement for total corneal power and posterior keratometry.

Conclusions: The ANTERION revealed high repeatability of automatic measurements and good agreement with the MS-39 for many parameters in patients affected by keratoconus, but for most parameters the two instruments cannot be considered interchangeable. [J Refract Surg. 2024;40(7):e445-e452.].

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角膜炎患者前段扫源 OCT 生物测量仪自动测量的重复性。

目的：评估新型前段光学相干断层成像仪（ANTERION；海德堡工程公司）自动测量的可重复性及其与结合 Placido 圆盘角膜地形图（MS-39；CSO）的前段光学相干断层成像仪在角膜炎患者中的一致性：方法：连续纳入 54 名患者。使用 ANTERION 进行了三次测量，使用 MS-39 进行了一次测量。重复性通过受试者内标准偏差、变异系数（CoV）和类内相关系数（ICC）进行评估。用 95% 的一致性限值对一致性进行了调查。对不同设备的测量结果进行了配对 t 检验和 Wilcoxon 配对检验：ANTERION 测量的重复性很高，所有参数的 ICC 均大于 0.98。许多参数的 CoV 值小于 1%，散光测量的 CoV 值在 5%以内。ANTERION 测得的角膜强度明显更高，MS-39 测得的后角膜负值更大。这些差异反映在平均模拟角膜度数的中等一致性以及总角膜力和后角膜度数的较差一致性上：结论：ANTERION 显示，在角膜塑形镜患者的许多参数上，自动测量的重复性高，与 MS-39 的一致性好，但在大多数参数上，两台仪器不能互换。[J Refract Surg. 2024;40(7):e445-e452.]。

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来源期刊

$Journal of refractive surgery$

Journal of refractive surgery 医学-外科

CiteScore

5.10

自引率

12.50%

发文量

160

审稿时长

4-8 weeks

期刊介绍： The Journal of Refractive Surgery, the official journal of the International Society of Refractive Surgery, a partner of the American Academy of Ophthalmology, has been a monthly peer-reviewed forum for original research, review, and evaluation of refractive and lens-based surgical procedures for more than 30 years. Practical, clinically valuable articles provide readers with the most up-to-date information regarding advances in the field of refractive surgery. Begin to explore the Journal and all of its great benefits such as: • Columns including “Translational Science,” “Surgical Techniques,” and “Biomechanics” • Supplemental videos and materials available for many articles • Access to current articles, as well as several years of archived content • Articles posted online just 2 months after acceptance.