Vasavada Viraj, Vasavada Vaishali, Raj Shetal M, Vasavada Abhay R
Iladevi Cataract & IOL Research Centre, Raghudeep Eye Clinic, Gurukul Road, Memnagar, Ahmedabad-380052, India.
J Cataract Refract Surg. 2007 Jun;33(6):1019-24. doi: 10.1016/j.jcrs.2007.02.029.
To evaluate the intraoperative performance and postoperative outcomes after microcoaxial phacoemulsification.
Iladevi Cataract & IOL Research Centre, Ahmedabad, India.
A prospective observational case series comprised 84 eyes with age-related uncomplicated cataract having microcoaxial phacoemulsification through a 2.2 mm clear corneal incision by a standard surgical technique. Phacoemulsification parameters (Infiniti Vision System, Alcon) were microburst width, 30 ms; preset power, 50%; vacuum, 650 mm Hg; aspiration flow rate, 25 cc/minute. A single-piece Alcon AcrySof intraocular lens was implanted with the C cartridge (Alcon) cartridge. The incision was measured at the end of surgery. Observations included surgical time (from commencement of sculpting to end of epinucleus removal), cumulative dissipated energy (CDE), wound burns, intraoperative complications, postoperative increase in mean central corneal thickness (CCT) at 1 day and 1 month, mean % decrease in endothelial cell density (ECD), absolute mean change in coefficient of variation (cv) 3 months, and uncorrected visual acuity (UCVA) at 1 day. Data were analyzed using a 1-sample t test with 95% confidence intervals (CIs).
The mean follow up was 3 months +/- 0.3 (SD). The mean incision size at the end of surgery was 2.3 +/- .09 mm; mean surgical time, 4.5 +/- 1.5 minutes; and mean CDE, 2.3 +/- 2.2 seconds. No wound burns or other intraoperative complications occurred. The postoperative CCT increased by a mean of 16 microm at 1 day (95% CI, 8-25; P = .66;) and by a mean of 3.14 microm at 1 month (95% CI, 2.26-4.05; P = .92). The ECD decreased by a mean of 5.8% (95% CI, 6.8-3.5; P = .82) and the mean coefficient of variation, by 3.3 (95% CI, 4.5-2.0; P = .65). At 1 day, the UCVA was 20/20 in 29% of cases, 20/20 to 20/40 in 58%, and 20/40 to 20/50 in 12%.
Microcoaxial phacoemulsification was safely and effectively performed, achieving consistent and satisfactory postoperative outcomes.
评估微同轴超声乳化白内障吸除术的术中表现及术后效果。
印度艾哈迈达巴德的伊拉德维白内障与人工晶状体研究中心。
一项前瞻性观察性病例系列研究，纳入84例年龄相关性单纯性白内障患者的患眼，采用标准手术技术经2.2mm透明角膜切口行微同轴超声乳化白内障吸除术。超声乳化参数（爱尔康Infiniti视觉系统）为：微爆破宽度30毫秒；预设功率50%；真空度650mmHg；抽吸流速25cc/分钟。使用C型注射卡（爱尔康）植入一片式爱尔康AcrySof人工晶状体。手术结束时测量切口大小。观察指标包括手术时间（从雕刻开始至核上皮质清除结束）、累积能量消散（CDE）、切口灼伤、术中并发症、术后1天和1个月时中央角膜厚度（CCT）的平均增加量、内皮细胞密度（ECD）的平均降低百分比、3个月时变异系数（cv）的绝对平均变化以及术后1天的未矫正视力（UCVA）。采用95%置信区间（CI）的单样本t检验进行数据分析。
平均随访时间为3个月±0.3（标准差）。手术结束时平均切口大小为2.3±0.09mm；平均手术时间为4.5±1.5分钟；平均CDE为2.3±2.2秒。未发生切口灼伤或其他术中并发症。术后1天时CCT平均增加16微米（95%CI，8 - 25；P = 0.66），术后1个月时平均增加3.14微米（95%CI，2.26 - 4.05；P = 0.92）。ECD平均降低5.8%（95%CI，6.8 - 3.5；P = 0.82），变异系数平均变化3.3（95%CI，4.5 - 2.0；P = 0.65）。术后1天时，29%的患者UCVA为20/20，58%的患者UCVA为20/20至20/40，12%的患者UCVA为20/40至20/50。
微同轴超声乳化白内障吸除术安全有效，术后效果一致且令人满意。
