Department of Ophthalmology, University of Leipzig, Leipzig, Germany.
J Cataract Refract Surg. 2010 Nov;36(11):1855-61. doi: 10.1016/j.jcrs.2010.06.060.
To compare the intraoperative and postoperative outcomes of conventional longitudinal phacoemulsification and torsional phacoemulsification.
Department of Ophthalmology, University of Leipzig, Germany.
Randomized single-center clinical trial.
Eyes with senile cataract were randomized to have phacoemulsification using the Infiniti Vision System and the torsional mode (OZil) or conventional longitudinal mode. Primary outcomes were corrected distance visual acuity (CDVA) and central endothelial cell density (ECD), calculated according to the Conference on Harmonisation-E9 Guidelines in which missing values were substituted by the median in each group (primary analysis) and the loss was then calculated using actual data (secondary analysis). Secondary outcomes were ultrasound (US) time, cumulative dissipated energy (CDE), and percentage total equivalent power in position 3. Postoperative follow-up was at 3 months.
The mean preoperative CDVA was 0.41 logMAR in the torsional group and 0.38 logMAR in the longitudinal group, improving to 0.07 logMAR postoperatively in both groups. The mean ECD loss was 7.2% ± 4.6% in the torsional group (72 patients) and 7.1% ± 4.4% in the longitudinal group (76 patients), with no statistically significant differences in the primary analysis (P = .342) or secondary analysis (P = .906). The mean US time, CDE, and percentage total equivalent power in position 3 were statistically significantly lower in the torsional group (98 patients) than in the longitudinal group (94 patients) (P<.001).
The torsional mode was as safe as the longitudinal mode in phacoemulsification for age-related cataract.
比较传统的纵向超声乳化和扭转超声乳化的术中及术后结果。
德国莱比锡大学眼科系。
随机单中心临床试验。
将老年性白内障患者随机分为使用 Infiniti 视觉系统和扭转模式（OZil）或传统纵向模式进行超声乳化组。主要结局是矫正远视力（CDVA）和中央角膜内皮细胞密度（ECD），根据协调会议 E9 指南计算，其中每个组的缺失值用中位数代替（主要分析），然后使用实际数据计算损失（次要分析）。次要结局是超声（US）时间、累积耗散能量（CDE）和位置 3 的总等效功率百分比。术后随访 3 个月。
扭转组术前 CDVA 平均为 0.41 logMAR，纵向组为 0.38 logMAR，两组术后均提高至 0.07 logMAR。扭转组角膜内皮细胞密度损失平均为 7.2%±4.6%（72 例），纵向组为 7.1%±4.4%（76 例），主要分析（P =.342）或次要分析（P =.906）均无统计学差异。扭转组（98 例）的超声时间、CDE 和位置 3 的总等效功率百分比均明显低于纵向组（94 例）（P<.001）。
在年龄相关性白内障的超声乳化中，扭转模式与纵向模式一样安全。
