Augen- und Laserklinik, Castrop-Rauxel, Germany.
J Cataract Refract Surg. 2011 Aug;37(8):1411-8. doi: 10.1016/j.jcrs.2011.02.028. Epub 2011 Jun 23.
To evaluate the efficacy, predictability, and safety of coaxial microincision phacoemulsification and toric intraocular lens (IOL) implantation in eyes with high corneal astigmatism.
Two eye clinics in Germany.
Case series.
Routine cataract extraction using 2.2 mm coaxial phaco equipment and Acrysof toric IOL (3.00 to 6.00 diopters [D] cylinder) implantation were performed. Examinations included optical biometry, Haigis IOL calculation, topography, and objective and subjective refractions. Retroillumination images were used to evaluate IOL alignment. Postoperative examinations were scheduled at 1 week and 3 months.
The study enrolled 40 eyes (30 patients). The mean preoperative keratometric cylinder was 3.55 ± 0.73 D (range 2.64 to 5.39 D) and the mean 3-month postoperative subjective cylinder, 0.67 ± 0.32 D. The mean logMAR uncorrected distance visual acuity improved from 0.93 to 0.20 and the mean logMAR CDVA, from 0.41 to 0.09. The mean prediction error (spherical equivalent) was +0.14 ± 0.44 D. The mean IOL rotation between 1 week and 3 months was 0.23 ± 1.9 degrees clockwise. The mean surgically induced astigmatism was 0.08 ± 0.41 D. The alignment error was below 10 degrees in 97.5% of cases. The mean vector change in refractive cylinder between 1 week and 3 months was 0.31 ± 0.19 D. The Alpins correction index was +1.01, indicating a slight tendency toward overcorrection.
Coaxial microincision phacoemulsification with toric IOL safely and predictably reduced high corneal astigmatism and improved surgical outcomes. Thorough planning and precise execution are necessary.
评估同轴微切口超声乳化白内障吸除术联合散光型人工晶状体（IOL）植入术治疗高度角膜散光眼的疗效、预测性和安全性。
德国的 2 家眼科诊所。
病例系列。
使用 2.2mm 同轴超声乳化设备和 Acrysof toric IOL（3.00 至 6.00 屈光度[D]柱镜）进行常规白内障摘除术。检查包括光学生物测量、Haigis IOL 计算、地形图、客观和主观验光。使用反向照明图像评估 IOL 定位。术后 1 周和 3 个月进行随访检查。
该研究纳入 40 只眼（30 例患者）。术前平均角膜散光为 3.55±0.73D（范围 2.64 至 5.39D），术后 3 个月平均主观散光为 0.67±0.32D。平均未矫正远视力 logMAR 从 0.93 提高至 0.20，平均最佳矫正远视力 logMAR 从 0.41 提高至 0.09。平均预测误差（等效球镜）为+0.14±0.44D。IOL 在 1 周和 3 个月之间的平均旋转为 0.23±1.9 度顺时针方向。平均手术诱导散光为 0.08±0.41D。97.5%的病例的定位误差小于 10 度。1 周和 3 个月之间的折射性散光平均向量变化为 0.31±0.19D。Alpins 矫正指数为+1.01，表明存在轻微的过矫趋势。
同轴微切口超声乳化白内障吸除术联合散光型 IOL 安全、可预测地降低了高度角膜散光，并改善了手术效果。需要进行彻底的规划和精确的操作。
