方法：白内障IV级以上硬核患者150眼分成小切口非超声乳化白内障手术组(74眼)和白内障超声乳化组(76眼)，对两组的核处理时间、术中术后并发症、术后视力进行对比观察。

结果：小切口非超声乳化白内障手术组和白内障超声乳化组在核处理时间，虹膜损伤及后囊破裂比较及术后角膜和前房反应比较中，两组间差异有统计学意义(P<0.05)。术后视力早期差异有统计学意义(P<0.05)； 术后晚期无明显差异(P>0.05)。

结论：小切口白内障手术较超声乳化白内障手术在IV级以上硬核上有优势，是治疗IV级以上硬核白内障较理想的选择。

METHODS: Totally 150 eyes with cataract above the IV grade hard-core were divided into non-phacoemusification minimal-incision cataract surgery group(74 eyes)and phacoemulisification group(76 eyes). Nuclear processing time, operating complications and postoperative complications, visual acuity of the two graoups were compared.

RESULTS: There were significant difference between the non-phacoemusification minimal-incision cataract surgery group and the phacoemulsification group in nuclear processing time, operating complications(iris damage and posterior capsule rupture), postoperative complications(corneal and anterior chamber reaction),and early vision(P<0.05). There was no significant difference between the two groups in late vision(P>0.05).

CONCLUSION: Non-phacoemusification minimal-incision cataract surgery is better than phacoemulsification and it is an ideal method for treating above IV grade hard nucleus cataract.