PURPOSE:To assess the clinical outcomes after implantation of a new hydrophobic acrylic toric intraocular lens (IOL) to correct preexisting corneal astigmatism in patients having routine cataract surgery. SETTING:Four hospital eye clinics throughout Europe. DESIGN:Cohort study. METHODS:This study included eyes with at least 0.75 diopter (D) of preexisting corneal astigmatism having routine cataract surgery. Phacoemulsification was performed followed by insertion and alignment of a Tecnis toric IOL. Patients were examined 4 to 8 weeks postoperatively; uncorrected distance visual acuity (UDVA), corrected distance visual acuity, manifest refraction, and keratometry were measured. Individual patient satisfaction with uncorrected vision and the surgeon's assessment of ease of handling and performance of the IOL were also documented. The cylinder axis of the toric IOL was determined by dilated slitlamp examination. RESULTS:The study enrolled 67 eyes of 60 patients. Four to 8 weeks postoperatively, the mean UDVA was 0.15 logMAR ± 0.17 (SD) and the UDVA was 20/40 or better in 88% of eyes. The mean refractive cylinder decreased significantly postoperatively, from -1.91 ± 1.07 D to -0.67 ± 0.54 D. No significant change in keratometric cylinder was observed. The mean absolute IOL misalignment from the intended axis was 3.4 degrees (range 0 to 12 degrees). The good UDVA resulted in high levels of patient satisfaction. CONCLUSION:Implantation of the new toric IOL was an effective, safe, and predictable method to manage corneal astigmatism in patients having routine cataract surgery.

译文

目的:评估植入新的疏水性丙烯酸丙烯酸复曲面人工晶状体(IOL)后的临床结局,以纠正常规白内障手术患者中已有的角膜散光。
地点:整个欧洲的四家医院眼科诊所。
设计:队列研究。
方法:本研究纳入了至少有0.75屈光度(D)且已患有常规白内障手术的角膜散光的眼睛。进行超声乳化,然后插入和对准Tecnis toric IOL。术后4至8周对患者进行了检查;测量未矫正远视力(UDVA),矫正远视力,明显屈光度和角膜曲率。还记录了患者对未矫正视力的满意度以及外科医生对IOL的易操作性和性能的评估。通过扩张的裂隙灯检查确定复曲面IOL的圆柱轴。
结果:该研究纳入了60例患者的67只眼。术后四到八周,在88%的眼睛中,平均UDVA为0.15 logMAR±0.17(SD),UDVA为20/40或更高。术后平均屈光度数从-1.91±1.07 D显着下降至-0.67±0.54D。角膜屈光度数柱未见明显变化。与目标轴的平均IOL绝对偏差为3.4度(范围为0到12度)。好的UDVA可以使患者满意。
结论:新的复曲面人工晶状体植入术是治疗常规白内障手术患者角膜散光的一种有效,安全且可预测的方法。

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