ABSTRACT

Purpose

Long-term results of arcuate incisions are rarely reported. This is unfortunate as long-term stability of astigmatic correction is of great interest to surgeons performing astigmatic correction. This study investigates the 7 year stability of results after application of femtosecond laser-assisted arcuate incisions with the Castrop nomogram.

Methods

Prospective interventional case series at the Augen- und Laserklinik, Castrop-Rauxel, Germany. Single site, single surgeon study. Seven year results of cataract patients with low to moderate corneal astigmatism receiving femtosecond laser‐assisted arcuate incisions using a TechnolasVictus SW 2.7 (Bausch & Lomb Inc, Dornach, Germany) were assessed and compared to 1 year results. Outcome evaluation was based on astigmatic vector analysis, manifest refraction, and visual acuity.

Results

The study analyzed 19 eyes of 19 patients 7 years after surgery. Ocular residual astigmatism changed from −0.26 to −0.39 D. Preoperative corneal astigmatism was −1.51 D. Correction Index changed from 1.0 to 1.16. The magnitude of difference vector changed from 0.26 to 0.39 D. The index of success changed from 0.20 to 0.29. Spherical equivalent remained stable. A slight tendency to change toward astigmatic overcorrection was mainly observed for patients with preoperative with the rule astigmatism, but not with patients with against the rule astigmatism.

Conclusions

The Castrop nomogram showed stable results 7 years after surgery. Similar to toric IOL surgery, it is advisable to be less aggressive when correcting with the rule astigmatism, to avoid overcorrection over a long period.

中文翻译：

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持久效果：飞秒激光辅助成对角膜弓形切口的 Castrop 列线图七年结果

摘要

目的

弓形切口的长期结果很少报道。这是不幸的，因为散光矫正的长期稳定性对于进行散光矫正的外科医生非常感兴趣。本研究调查了应用带有 Castrop 列线图的飞秒激光辅助弓形切口后 7 年结果的稳定性。

方法

德国 Castrop-Rauxel 的 Augen-und Laserklinik 的前瞻性介入病例系列。单一地点，单一外科医生研究。评估了使用 TechnolasVictus SW 2.7（Bausch & Lomb Inc，德国多纳赫）接受飞秒激光辅助弓形切口的低至中度角膜散光白内障患者的 7 年结果，并与 1 年结果进行了比较。结果评估基于散光矢量分析、明显屈光度和视力。

结果

该研究在术后 7 年分析了 19 名患者的 19 只眼睛。眼部残余散光从 -0.26 变为 -0.39 D。术前角膜散光为 -1.51 D。矫正指数从 1.0 变为 1.16。差分向量的大小从 0.26 变为 0.39 D。成功指数从 0.20 变为 0.29。球形当量保持稳定。主要在术前规则散光患者中观察到散光过度矫正的轻微变化趋势，但在逆规则散光患者中没有观察到。

结论

术后 7 年，Castrop 列线图显示出稳定的结果。与复曲面人工晶状体手术类似，建议在使用规则散光进行矫正时减少积极性，以避免长期过度矫正。