Atatürk Training and Research Hospital, 2nd Ophthalmology Department, Ankara, Turkey.
J Cataract Refract Surg. 2010 May;36(5):740-6. doi: 10.1016/j.jcrs.2009.11.013.
To compare the intraoperative and postoperative results of 3 phacoemulsification techniques.
Atatürk Training and Research Hospital, 2nd Ophthalmology Department, Ankara, Turkey.
In this prospective randomized study, patients had standard coaxial (2.8 mm incisions), microcoaxial (2.2 mm incisions), or biaxial microincision (1.2 to 1.4 mm trapezoidal incisions) phacoemulsification. Intraoperative phaco parameters and total surgical time were measured and complications recorded. Postoperative visual acuity improvement, pachymetric differences, and surgically induced astigmatism (SIA) results were compared.
Each group comprised 45 eyes. There were no significant differences between the 3 groups in demographic, morphologic, or preoperative surgical data. The mean effective phaco time was 2.56 seconds +/- 2.46 (SD) in the standard coaxial group, 1.98 +/- 1.91 seconds in the microcoaxial group, and 1.29 +/- 1.85 seconds in the biaxial microincision group (P<.05). The mean total surgical time was 14.48 +/- 4.21 minutes, 13.01 +/- 3.66 minutes, and 18.79 +/- 6.58 minutes, respectively (P<.01), and the mean measured final incision size was 2.83 +/- 0.11 mm, 2.26 +/- 0.07 mm, and 1.89 +/- 0.21 mm, respectively. The mean SIA 90 days postoperatively was 0.46 diopter (D), 0.24 D, and 0.13 D, respectively (P<.01). There was no statistically significant difference in the complication rate, visual acuity gain, or pachymetric change between the groups (P>.05).
All 3 techniques were reliable, functional, and effective, yielding good visual outcomes and low phaco parameters and complication rates. Biaxial microincision surgery, with the smallest incisions, induced less astigmatism and reduced all intraoperative phaco parameters except total surgical time.
比较 3 种超声乳化术的术中及术后结果。
土耳其安卡拉阿塔图尔克培训与研究医院第 2 眼科。
在这项前瞻性随机研究中，患者接受标准同轴（2.8mm 切口）、微同轴（2.2mm 切口）或双轴微切口（1.2 至 1.4mm 梯形切口）超声乳化术。测量术中超声参数和总手术时间并记录并发症。比较术后视力提高、角膜厚度差异和手术诱导散光（SIA）结果。
每组 45 只眼。3 组间在人口统计学、形态学或术前手术数据方面无显著差异。标准同轴组的平均有效超声乳化时间为 2.56 秒±2.46（标准差），微同轴组为 1.98 秒±1.91 秒，双轴微切口组为 1.29 秒±1.85 秒（P<.05）。平均总手术时间分别为 14.48 秒±4.21 分钟、13.01 秒±3.66 分钟和 18.79 秒±6.58 分钟（P<.01），平均测量的最终切口大小分别为 2.83 毫米±0.11 毫米、2.26 毫米±0.07 毫米和 1.89 毫米±0.21 毫米。术后 90 天的平均 SIA 分别为 0.46 屈光度（D）、0.24 D 和 0.13 D（P<.01）。各组间的并发症发生率、视力提高或角膜厚度变化无统计学差异（P>.05）。
所有 3 种技术均可靠、有效，产生良好的视觉效果和较低的超声参数及并发症发生率。双轴微切口手术切口最小，引起的散光最小，除总手术时间外，所有术中超声参数均降低。
