手法碎核在非超声乳化白内障摘除术中运用

目的评估自行研制的手法固定劈核器,在小切口非超声乳化白内障摘除术中的运用。方法选择20例Ⅲ～V级硬核白内障患者,在术中通过自行研制的劈核器,固定晶状体核,并使核劈成两瓣,通过4mm左右的切口剜出。观察术后视力、内皮细胞平均丢失、角膜水肿等改变。结果20例患者均能顺利完成劈核,术后1周15例视力0.5以上,占75%;角膜水肿7例,占35%;术前和术后,内皮细胞数平均分别为（2638±405）/mm2和（2455±450）/mm（2P〈0.01）;角膜屈光度分别为（44.05±1.12）D和（44.50±1.05）D（P〈0.05）。结论在小切口非超声乳化白内障摘除术中,固定式手法劈核有利于处理硬核性白内障,是安全、有效的手法碎核方法之一。

Application of stable-nucleus chopping in non-phacoemulsification cataract surgery

Objective To evaluate the application of stable-nucleus chopping in small incision non-phacoemulsification cataract surgery. Methods Twenty cases of cataract with their nucleus being degree Ⅲ or harder were performed.All nuclei had been divided into two parts by stable-nuclens technique and drawn out by lena hook under about 4mm sclera tunnel incision. Results Twenty cases were suc-ceeded to chop.On postoperative one week, uncorrected visual acuity was 0.5 or better in 15 cases(75%); corneal edema was 7cases(35%). On preoperative and postoperative, the average cell density of the corneal endothelium was 2638±405/mm2 and 2455±450/mm2 cells (P<0.01) re-spectively; the average cornea refractive power was (44.05±1.12)D and (44.50±1.05) D (P<0.05)respectively. Conclusion Stable-nucleus chopping is fit for the management of nueleus with degree Ⅲ or harder and the technique is safe and effective in small incision non-pha-coomulsification cataract surgery.