摘要
目的探讨利用超声乳化仪的双线性控制系统结合爆破能量释放模式实施微切口冷超声乳化白内障摘出术的效果。方法将白内障患者80例(80眼),随机分为常规手术组及微切口手术组,分别实行3.0mm切口常规超声乳化及1.4mm双手微切口超声乳化。记录2组患者术中实际使用的超声能量和时间、术后视力、角膜内皮细胞密度及散光。结果微切口组术中实际使用超声能量及超声时间均低于常规组,差异有统计学意义(P=0.001)。术后微切口组角膜内皮细胞丢失率及手术源性散光均明显低于常规组,差异有统计学意义(P=0.005)。常规组术后角膜水肿多于微切口组。结论利用双线性控制结合爆破模式进行双手微切口超声乳化可减少超声能量和时间,降低角膜内皮细胞丢失率,减轻术后早期角膜水肿,减少手术源性散光。
Objective Microphacocmulsification is a new operating procedure for cataract. This procedure is charaterized by its small incision, short duration and less thermal damage to tissue. We studied the clinical effectiveness of bimanual microphacoemulsification using the burst mode with dual linear ultrasonic equipment. Methods Eighty eyes （80 patients） were randomly assigned to conventional operating group and microphacoemulsification group,and various phaeo modes were used during the surgery. Actual phaco power and duration, visual acuity change, corneal endothelial cell density, astigmatism and operative complication were recorded. Results Phaeo power and duration in conventional operating group was （24.15 ± 4. 52）% and （95 ± 32） seconds respectively and that in microphacoemulsification group was （7.82 ± 1.13）% and （31 26） seconds respectively ,showing a significant difference between two groups（ P = 0. 001 ）. Visual acuity was significant improved in all patients in both groups. Endothelial cell loss postoperatively was lower in the microphacoemulsification group than in the conventional operating group（2 755 ± 225 versus 2 402 ± 202 cells/mm^3 ,P = 0. 005 ）. The astigmatism was significantly reduced in microphacoemulsification group compared with the conventional operating group one （0.96 D ± 0. 74 D versus 1.12 D ± 0. 71 D,P = 0.021 ）. Serious corneal edema occurred more frequently in the conventional operating group than in the microphacoemulsification group. Conclusion Bimanual microphacoemulsification with dual linear ultrasonic equipment reduce phaco time and actual phaco power,especially in the burst mode. This enhance the effectiveness of phaco chop and lessen the loss of corneal endothelial cell and reduce the corneal edema.
出处
《眼科研究》
CSCD
北大核心
2007年第3期218-221,共4页
Chinese Ophthalmic Research
