定位钩劈核技术在白内障小切口手术中的应用观察

Application of positioning hook for chopping lens nucleus in the small incision cataract extraction

目的:评价定位钩劈核技术在白内障小切口手术中的应用效果。方法:做5.5～6.0mm一字形巩膜隧道切口,采用定位钩劈核技术对219例219眼老年性白内障进行囊外摘除术并Ⅰ期植入PMMA人工晶状体。结果:219例全部成功完成定位钩劈核,术后3d裸眼视力≥0.5者182眼(83.1%),≥1.0者37眼(16.9%),手术并发症主要有角膜水肿和前部色素膜炎,经常规治疗3d后痊愈。结论:结果提示定位钩劈核技术简便易行,可有效解决核大切口小的矛盾,减少术后角膜散光,早期获得良好的视力。

AIM： To evaluate the effect of the application of positioning hook for chopping lens nucleus in the small incision cataract extraction. METHODS： Two hundred and nineteen cases （219 eyes） subjects with age-related cataract were underwent extra capsular cataract extrac-tion. After the 5.5-6.0mm linear sclera tunnel incision was made, positioning hook was applied in dividing lens nucleus, followed by the primary implantation of PMMA intraocular lens. RESULTS： Positioning hook chopping technology was successfully carried out on the 219 cases. The visual acuity of 182 eyes （83.1%） were better than 0.5, 37 eyes （ 16.9% ） were better than 1.0 three days after surgery and the major postoperative complications of corneal edema and anterior uveitis were cured after 3 days conventional treatment. CONCLUSION： It suggested that appreciable convenience as well as feasibility for positioning hook chopping method is capable to reconcil the incompatible sizes of lens nucleus and incisions, resulting in a remarkable reduction of the postoperative corneal astigmatism, and a delightful vision finally.