Ouchi Eye Clinic, Minami-ku, Kyoto, Japan.
J Refract Surg. 2011 Sep;27(9):643-7. doi: 10.3928/1081597X-20110317-03.
To evaluate the effectiveness of toric intraocular lens (IOL) implantation combined with limbal relaxing incision (LRI) for patients with high-amplitude astigmatism.
This single-center, prospective study evaluated 22 eyes of 19 patients with cataract and >2.50 diopters (D) astigmatism that underwent bimanual micro-phacoemulsification cataract surgery and toric IOL implantation combined with LRI. Pre- and 6-month postoperative uncorrected and corrected distance visual acuity (UDVA and CDVA, respectively), subjective cylindrical error, refractive cylindrical error, keratometric cylinder, and corneal topography were compared. Vector analysis of change in keratometric cylinder was compared pre- and postoperatively.
Pre- and postoperative logMAR UDVA were 0.82 ± 0.46 and 0.13 ± 0.19, respectively; pre- and postoperative logMAR CDVA were 0.35 ± 0.39 and 0.005 ± 0.13, respectively. Mean postoperative refractive cylindrical error was 1.07 ± 0.60 D. Although predicted residual astigmatism after implantation of the toric IOL was 1.42 ± 0.76 D, pre- and postoperative subjective cylindrical error and keratometric cylinder changed from 3.90 D to 0.94 D and from 3.46 D to 1.80 D, respectively.
Our results show that the combined surgery of toric IOL implantation and LRI is effective in patients with high-amplitude astigmatism >2.50 D.
评估散光矫正型人工晶状体（IOL）植入联合角膜缘松解切口（LRI）治疗大度数散光的效果。
本单中心前瞻性研究纳入 19 例（22 只眼）白内障合并>2.50 屈光度（D）散光患者，均行双手微切口超声乳化白内障吸除术联合散光矫正型 IOL 植入及 LRI。比较术前及术后 6 个月的未矫正远视力（UDVA）和矫正远视力（CDVA）、主观柱镜度、等效球镜度、角膜曲率计测量的柱镜度和角膜地形图。比较术前与术后角膜曲率计测量的角膜散光矢量分析变化。
术前与术后 logMAR UDVA 分别为 0.82±0.46 和 0.13±0.19，术前与术后 logMAR CDVA 分别为 0.35±0.39 和 0.005±0.13。术后平均等效球镜度为 1.07±0.60 D。虽然散光矫正型 IOL 植入术后预测残余散光为 1.42±0.76 D，但术前与术后的主观柱镜度和角膜曲率计测量的柱镜度分别从 3.90 D 变为 0.94 D 和从 3.46 D 变为 1.80 D。
本研究结果表明，散光矫正型 IOL 植入联合 LRI 手术治疗>2.50 D 大度数散光患者的效果确切。
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