Accuracy of Intraocular Lens Calculation in a Non-diffractive Extended Depth of Focus Intraocular Lens After Myopic LASIK.

IF 3 3区医学 Q1 OPHTHALMOLOGY

Journal of refractive surgery Pub Date : 2025-09-01 DOI:10.3928/1081597X-20250707-07

Thomas Kohnen, Titus Schug, Carolin Kolb-Wetterau, Tyll Jandewerth, Julian Bucur, Christoph Lwowski, Klemens Paul Kaiser

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引用次数: 0

Abstract

Purpose: To evaluate intraocular lens (IOL) power calculation of a non-diffractive extended depth of focus (EDOF) IOL after myopic laser in situ keratomileusis (LASIK) without historical data.

Methods: In this consecutive case series, patients who had undergone lens surgery with implantation of a non-diffractive EDOF IOL after myopic laser in situ keratomileusis (LASIK) at the Department of Ophthalmology, University Hospital Frankfurt, Frankfurt, Germany, were included. Preoperative assessments included biometry and tomography using Scheimpflug technology (Pentacam; Oculus Optikgeräte GmbH). Seven IOL calculation formulas for use in eyes after myopic LASIK have been analyzed: Potvin-Hill-Shammas-PM, OKULIX ray-tracing, PEARL-DGS and PEARL-DGS with posterior radial curvature, Barrett True-K No History with measured and predicted posterior corneal astigmatism, Hoffer QST, and EVO 2.0. The last three formulas were additionally calculated using the European Society of Cataract and Refractive Surgery (ESCRS) online calculator. Spherical equivalent prediction errors were analyzed using an established online tool (Eyetemis).

Results: Thirty-four eyes of 34 patients were enrolled. Trueness of all formulas was high, with no significant difference from zero, except for OKULIX ray-tracing (-0.40 ± 0.60, P < .01). No statistically significant differences in accuracy were found, with more than 59% of eyes within ±0.50 diopters and more than 85% within ±1.00 diopters for all formulas. Similar results were found between the formulas included in the ESCRS calculator when using the recommended IOL constants or constants from the IOLcon database.

Conclusions: A comparison of ray-tracing with other IOL calculation formulas revealed no substantial advantage for the former, resulting in comparable outcomes. Using the ESCRS calculator yielded comparable good results.

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近视眼LASIK术后无衍射扩焦深度人工晶状体计算的准确性。

目的：评价无历史资料的近视眼激光原位角膜磨除术（LASIK）术后无衍射扩展焦深（EDOF）人工晶状体（IOL）的度数计算。方法：在这个连续的病例系列中，包括在德国法兰克福大学医院眼科接受近视激光原位角膜磨镶术（LASIK）后晶状体手术并植入无衍射EDOF IOL的患者。术前评估包括使用Scheimpflug技术（Pentacam; Oculus Optikgeräte GmbH）进行生物测定和断层扫描。分析了近视LASIK术后使用的7种人工晶状体计算公式：potvin - hill - shamma - pm、OKULIX射线追踪、PEARL-DGS和PEARL-DGS后桡骨曲率、Barrett True-K No History测量和预测角膜后散光、Hoffer QST和EVO 2.0。最后三个公式是使用欧洲白内障和屈光手术学会（ESCRS）在线计算器进行计算的。利用已建立的在线工具（Eyetemis）分析球面等效预测误差。结果：34例患者入组34只眼。除OKULIX射线示踪（-0.40±0.60,P < 0.01）外，各公式的正确率均较高，与零无显著差异。所有配方的准确度无统计学差异，超过59%的眼睛在±0.50屈光度范围内，超过85%的眼睛在±1.00屈光度范围内。当使用推荐的IOL常数或IOLcon数据库中的常数时，ESCRS计算器中包含的公式之间发现了相似的结果。结论：射线追踪与其他人工晶状体计算公式的比较显示前者没有实质性优势，结果可比较。使用ESCRS计算器产生了相当好的结果。

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

$Journal of refractive surgery$

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.