线性爆破模式在晶状体超声乳化术中的应用

目的 观察线性爆破超声能量模式在晶状体超声乳化吸出术中应用的临床效果.方法 将400例（400眼）白内障随机分为连续、脉冲、爆破及线性爆破模式4组,分别采用连续、脉冲、爆破及线性爆破超声能量模式行超声乳化吸出人工晶状体植入术.术中记录4组使用的实际超声时间,计算累计超声能量（平均超声能量与实际超声时间的乘积）,检查术后视力、角膜内皮细胞密度,并观察角膜水肿及手术并发症的发生情况.结果 线性爆破超声能量模式组较其他3组的实际超声时间明显缩短,累计超声能量明显减少,术后第1天视力提高明显,角膜内皮细胞密度损失少,角膜水肿发生率低;其差异均有统计学意义.结论 线性爆破模式是一种损伤轻效果好,一种新型的白内障超声乳化的手术方法.

Clinical observation on linear burst model in phacoemulsification

Objective To observe the clinical efficacy of linear burst model in phacoemulsification. Methods 400 eyes of 400 cataract patients received phacoemulsification and intraocular lens implantation and were divided randomly into 4 groups based on 4 different ultrasonic energy models ： continuous, pulse, burst and linear burst model. The actual ultrasonic time and cumulative ultrasonic energy were analyzed. The postoperative visual acuity, corneal endothelial density, corneal edema and complications were observed. Results The actual ultrasonic time and cumulative ultrasonic energy were significantly shorter in liner burst model group than in other 3 groups. The postoperative visual acuity was better,the corneal endothelial density was higher, the incidence of corneal edema and other complications were less in linear burst model group than in other 3 groups, and the differences were statistically significant. Conclusion The linear burst model in phacoemulsification has less damage to tissue and better clinical efficacy than other models.