Acrysof Toric人工晶状体矫正角膜散光的临床研究

目的评价Acrysof Toric人工晶状体（IOL）矫正角膜散光的效果及在囊袋内的稳定性。方法收集确诊为年龄相关性白内障并伴有角膜规则散光的患者45例（45眼）,采用白内障超声乳化法植人AcrysofToric IOL。观察术前、术后裸眼视力（UCVA）及最佳矫正视力（BCVA）、术前角膜散光、预计残余散光、术后残余散光及IOL旋转度。结果术后3个月92%患眼UCVA≥0.5,78%患眼UCVA≥0.8,BCVA≥0.8者达96%。术前角膜散光平均为（1.400±0.405）D。术后3个月残余散光为（0.197±0.179）D。3个月时与术后第l天轴位相比较,IOL旋转平均为（2.322±1.853）°。结论 Acrysof Toric IOL可使患者获得更好的裸眼远视力,减少了患者的残余散光,预测性强,具有良好的旋转稳定性,是一种有效的矫正角膜规则散光的治疗方法。

Corneal astigmatism correction with the AcrySof Toric intraocular lens in cataract surgery

Objective To evaluate thecornealastigmatismcorrection effect and rotational stability of AcrysofToric Intraocular len（s IOL）after cataract surgery.Methods Forty-five eyes of 45 subjects were enrolled in this study.The preoperative corneal astigmatism waft more than 1.00 diopter（D） for all the eyes.All the patients underwent similar phaeoemulsification combined with Acrysof Toric IOLs implantation.The uncorrected visual acuity（UCVA）,best corrected visual acuity（BCVA）,preoperative corneal astigmatism,anticipated residual astigmatism,postoperative residual astigmatism and Toric lens axis were detected and measured.The IOL position was assessed at one day,one week,one month and three months after operation using especially designed angle measuring eyepiece under the slit lamp.Results After three months,92% of eyes showed the 0.5 or better in UCVA;78% of eyes was 0.8 or better in UCVA and 96%of eyes achieved 0.8 or better in BCVA.The mean preoperative corneal astigmatism was（1.400±0.405）D and the postoperative refractive cylinder was（0.197±0.179） D,indicating a significant decrease in refractive cylinder after surgery（P 0.05）.Compared to the first day after operation,the mean rotation of Toric IOLs was（2.322±1.853） °.Conclusions Acrysof Toric IOLs provide cataract patients with the better UCVA,good rotational stability and predictability in the correct of corneal astigmatism.It is an effective option for the correct of preexisting corneal astigmatism in cataract surgery.