Abstract：
To evaluate the visual outcome and astigmatic correction following trifocal intraocular lens (IOL) implantation using the modified femtosecond laser-assisted arcuate keratotomy (FSAK) in Chinese cataract patients with low astigmatism. This retrospective study included consecutive cataract patients with regular corneal astigmatism ranging from 0.75 to 1.5 D who underwent FSAK combined with the trifocal IOL implantation between November 2020 and September 2022. Monocular uncorrected distance visual acuity, uncorrected intermediate visual acuity, uncorrected near visual acuity, and refractive data were collected at the 3-month follow-up. The pre- and post-operative high-order aberrations (HOAs) were recorded. The variation in astigmatism was analyzed using Alpins vector analysis. A total of 27 eyes from 23 patients were analyzed. The monocular uncorrected distance visual acuity (UDVA) (5 m) at the 3-month follow-up was 0.04 ± 0.09 logarithm of the minimum angle of resolution (logMAR), which was significantly improved compared with the preoperative value of 0.95 ± 0.51 logMAR (P <.001). The corneal astigmatism was significantly reduced from 1.24 ± 0.42 D to 0.49 ± 0.34 D (P <.001). The target-induced astigmatism (TIA) was 1.25 ± 0.43 D, the surgically induced astigmatism (SIA) was 1.16 ± 0.52 D, and the difference vector (DV) was 0.5 ± 0.34 D. The magnitude of error (ME) (difference between SIA and TIA) was -0.1 ± 0.41 D, and the correction index (CI) (ratio of SIA to TIA) was 0.93 ± 0.36. The angle of error was 3.92° ± 16.90°. Total HOA was reduced from 0.89 ± 1.11 to 0.41 ± 0.55 (P = 0.184), and the corneal HOA was lowered from 0.17 ± 0.18 to 0.10 ± 0.10 (P = 0.129). Implantation of trifocal IOL following the modified FSAK in Chinese cataract patients exhibited excellent visual efficacy and effectively reduced corneal astigmatism.
摘要：
评价改良型飞秒激光辅助弓形角膜切开术(FSAK)治疗中国低散光白内障患者三焦点人工晶状体(IOL)植入术后的视力及散光矫正情况。这项回顾性研究包括2020年11月至2022年9月期间接受FSAK联合三焦IOL植入的常规角膜散光0.75至1.5D的连续白内障患者。单眼未矫正远距视力,未矫正的中间视力，未矫正的近视敏度，和屈光数据在3个月随访时收集。记录术前和术后高阶像差（HOA）。使用Alpins矢量分析法分析散光的变化。共分析23例患者的27只眼。3个月随访时的单眼未矫正远距视力（UDVA）（5m）为最小分辨角（logMAR）的0.04±0.09对数，与术前0.95±0.51logMAR值比较有明显改善(P<.001)。角膜散光从1.24±0.42D显著降低至0.49±0.34D(P<.001)。目标引起的散光（TIA）为1.25±0.43D，手术引起的散光（SIA）为1.16±0.52D，差异向量（DV）为0.5±0.34D。误差幅度（ME）（SIA和TIA之间的差异）为-0.1±0.41D，校正指数（CI）（SIA与TIA之比）为0.93±0.36。误差角度为3.92°±16.90°。总HOA从0.89±1.11降至0.41±0.55(P=0.184),角膜HOA从0.17±0.18降至0.10±0.10(P=0.129)。在中国人白内障患者中，改良FSAK后植入三焦点IOL具有出色的视觉效果，并有效降低了角膜散光。
