目的：观察同轴1.8mm微切口超声乳化术联合负度数人工晶状体植入在治疗白内障合并超高度近视的临床疗效。 方法：选取我院因白内障合并超高度近视行超声乳化吸除术和负度数人工晶状体植入的患者71例98眼进行回顾性研究，记录术前眼轴长度、术前视力、术前最佳矫正视力（BCVA）。观察手术并发症和术后眼部情况。术后随访3～6mo，并记录术后裸眼视力（UCVA），最佳矫正视力。 结果：术前平均眼轴长度为29.33±1.95mm。术前裸眼视力均<0.05。术后裸眼视力≥0.3共60眼(61％)；最佳矫正视力≥0.5为48眼(49%)；术中1眼出现晶状体后囊膜破裂；术后20例患者出现双眼干扰症状；后发性白内障6眼，5眼行激光晶状体后囊膜切开术；无视网膜和脉络膜脱离者，术后无眼压升高者。 结论：同轴1.8mm微切口超声乳化吸除术联合负度数人工晶状体植入术是治疗白内障合并超高度近视安全、有效的方法

To study the clinical effects of 1.8mm coaxial microincision phacoemulsification and negative power intraocular lens implantation for the patients with cataract and extreme myopia. METHODS: A retrospective study was carried out on 98 eyes of 71 cases with a history of cataract and extreme myopia. The patients received phacoemulsification and a negative power intraocular lens implantation. Preoperative axial length, visual acuity, best-corrected visual acuity(BCVA) were recorded. Intraoperative and postoperative complications were observed. The follow-up time was from 3 to 6 months. Postoperative visual acuity, BCVA were recorded. RESULTS: The mean preoperative axial length was 29.33±1.95mm. The preoperative visual acuity of the patients were all bellow 0.05. The postoperative uncorrected visual acuity (UCVA )achieved 0.3 in 60 eyes (61%) and the BCVA achieved 0.5 in 48 eyes (49％) after the operation. Only 1 eye had posterior capsule rupture during the operation. 20 eyes had binocular disturbances. 6 eyes developed posterior capsule opacification and 5 eyes were performed neodymium: YAG laser posterior capsulotomy. There were no retinal detachment or choroidal detachment during the follow-up. CONCLUSION: The 1.8mm coaxial microincision phacoemulsification and negative power intraocular lens implantation is safe and effective for cataract and extreme myopia.