TLC Eyecare & Laser Centers, Jackson, Michigan 49202, USA.
J Cataract Refract Surg. 2011 Apr;37(4):727-32. doi: 10.1016/j.jcrs.2010.11.026. Epub 2011 Feb 18.
To evaluate refractive results with a low-cylinder-power toric intraocular lens (IOL) and the effect of preoperative corneal astigmatism orientation on results.
Private practice, Jackson, Michigan, USA.
Comparative case series.
This retrospective review of clinical records comprised patients with 0.75 to 1.38 diopters (D) of preoperative corneal astigmatism who had uneventful cataract surgery and AcrySof T3 toric or AcrySof IQ spherical monofocal IOL implantation. Surgically induced astigmatism (SIA) was calculated for eyes with postoperative keratometry results. Postoperative refractive astigmatism between groups and subgroups was compared based on the orientation of preoperative corneal astigmatism.
Of the eyes, 185 had a toric IOL and 138 had a spherical IOL. The mean preoperative corneal astigmatism was 1.06 D, with no significant difference between IOL groups or by axis of astigmatism. The mean SIA was 0.25 D, with no significant difference between IOL groups. The mean postoperative refractive astigmatism was statistically significantly lower in the toric IOL group than in the spherical IOL group (0.31 D versus 1.06 D; P<.001). The axis of preoperative corneal astigmatism was not a significant factor in the toric IOL group. In the spherical IOL group, the residual astigmatism was slightly higher for with-the-rule than for against-the-rule astigmatism (1.07 D versus 0.70 D; P<.001).
The mean refractive astigmatism after cataract surgery in patients with 0.75 D to 1.38 D of corneal astigmatism was significantly lower when a toric IOL was implanted. Postoperative refractive astigmatism with the toric IOL was independent of preoperative corneal astigmatism axis orientation.
Neither author has a financial or proprietary interest in any material or method mentioned.
评估低散光力的 toric 人工晶状体（IOL）的屈光效果，以及术前角膜散光方向对结果的影响。
美国密歇根州杰克逊市的私人诊所。
对比病例系列。
本回顾性临床记录研究包括了 0.75 至 1.38 屈光度（D）术前角膜散光的患者，这些患者均行白内障手术并植入 AcrySof T3 toric 或 AcrySof IQ 球面单焦点 IOL。对术后角膜曲率计结果的眼计算手术源性散光（SIA）。根据术前角膜散光的方向，比较各组和亚组之间的术后屈光性散光。
共有 185 只眼植入 toric IOL，138 只眼植入球面 IOL。平均术前角膜散光为 1.06 D，两组之间或散光轴之间无显著差异。平均 SIA 为 0.25 D，两组之间无显著差异。与球面 IOL 组相比，toric IOL 组的平均术后屈光性散光明显较低（0.31 D 比 1.06 D；P<.001）。术前角膜散光的轴在 toric IOL 组不是一个重要因素。在球面 IOL 组，规则散光的残余散光略高于逆规散光（1.07 D 比 0.70 D；P<.001）。
在角膜散光为 0.75 D 至 1.38 D 的患者中，植入 toric IOL 后白内障手术后的平均屈光性散光明显降低。toric IOL 的术后屈光性散光与术前角膜散光轴方向无关。
两位作者均无任何材料或方法的经济或专有利益。
