Assessing Eye Movement Dynamics and Fixation Stability Between Eyes During Same-Session Bilateral LASIK.

IF 3 3区医学 Q1 OPHTHALMOLOGY

Journal of refractive surgery Pub Date : 2025-09-01 DOI:10.3928/1081597X-20250624-05

Soodabeh Darzi, Lily M Chacra, Samuel Arba-Mosquera, Shady T Awwad

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引用次数: 0

Abstract

Purpose: To investigate eye movement dynamics during excimer laser ablation, specifically femtosecond laser-assisted in situ keratomileusis (FS-LASIK), and compare movement patterns between the right eye (always operated on first) and the left eye (operated on second), analyzing direction, magnitude, and temporal changes.

Methods: A retrospective analysis was conducted on 92 eyes from 46 patients who underwent FS-LASIK with the SCHWIND AMARIS system (SCHWIND eye-tech-solutions). Eye-tracking data were collected to record horizontal and vertical directional movements; variability was assessed using standardized metrics. Temporal trends were analyzed using split-interval and correlation methods.

Results: Eye movement patterns revealed greater variability in the vertical direction (t-test [t] = -2.32, P = .02) than in the horizontal direction (t = -0.27, P = 0.79) for both eyes. The second eye showed more variability, particularly in the vertical direction, with earlier and more dynamic increases (correlation [r] = 0.20, slope 0.50, both P < .0005). Horizontal movements were initially reduced but gradually increased after 22 seconds (t = 2.02 for right eye, t = 2.09 for left eye, P = .04 for both). Vertical movements increased significantly after 13 seconds in the right eye (t = -2.06, P = .04) and 5 seconds in the left eye (t = -2.40, P = .02).

Conclusions: Eye movements during FS-LASIK exhibit dynamic variability, especially in the vertical direction. The second eye showed earlier, more pronounced movements as surgery progressed. These findings suggest the need to consider eye movement dynamics in surgical planning and system design.

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评估双侧LASIK手术中眼间运动动态和注视稳定性。

目的：研究准分子激光消融，特别是飞秒激光辅助原位角膜磨圆术（FS-LASIK）过程中的眼球运动动态，比较右眼（第一眼）和左眼（第二眼）的运动模式，分析方向、幅度和时间变化。方法：对46例使用SCHWIND AMARIS系统行FS-LASIK手术的92只眼进行回顾性分析。收集眼球追踪数据，记录水平和垂直方向的运动；使用标准化指标评估可变性。采用分割区间法和相关法分析时间趋势。结果：双眼的眼动模式在垂直方向上（t检验[t] = -2.32, P = 0.02）比在水平方向上（t = -0.27, P = 0.79）表现出更大的变异性。第二只眼表现出更大的可变性，特别是在垂直方向上，增加更早，更动态（相关性[r] = 0.20，斜率0.50，均P < .0005）。水平运动起初减少，22秒后逐渐增加（右眼t = 2.02，左眼t = 2.09，两者P = 0.04）。右眼垂直运动在13秒（t = -2.06, P = .04）和左眼垂直运动在5秒（t = -2.40, P = .02）后显著增加。结论：在FS-LASIK手术中，眼球运动表现出动态变异性，尤其是在垂直方向上。随着手术的进行，第二只眼睛出现了更早、更明显的运动。这些发现提示在手术计划和系统设计中需要考虑眼球运动动力学。

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.