两种不同长度切口超声乳化白内障手术疗效分析

Outcomes of cataract surgeries with different incisions

目的评价2.2 mm与2.8 mm两种角膜缘小切口超声乳化白内障手术对白内障硬核术后疗效的影响。方法将200例(200只眼)年龄相关性白内障患者,按照不同大小角膜缘切口随机分为2.2 mm与2.8 mm两组,行角膜缘小切口超声乳化白内障吸除联合折叠式人工晶状体植入术,比较两组术后视力、超声乳化时间、手术时间及并发症等情况。结果两组术后l周、1个月、3个月最佳视力及手术时间、III级核超声乳化时间两组差异无统计学意义(P>0.05)、并发症差异无统计学意义(P>0.05),2.8 mm组IV级核超声乳化时间显著短于2.2mm组(P<0.01)。结论在白内障超声乳化吸除联合折叠式人工晶状体植入术中,2.2 mm角膜缘切口与2.8mm角膜缘切口对白内障硬核处理术后疗效相同,均是一种安全有效的手术切口。

Objective To compare the outcomes of hard nucleus cataract surgeries using coaxial 2.2 mm small corneal limbus-incisien versus using conventional coaxial 2.8mm small incision. Methods A randomized study was con- ducted on 200 patients with age-related cataract. Coaxial 2.2 mm small-incision cataract surgery was pedormed in 109 cases （ 109 eyes） and coaxial 2.8 mm small-incision cataract surgery （91 eyes）. Visual acuity, surgical complications, effective ultrasonic emulsification time and operation time were compared between the two groups. Results There was no significant difference （ P 〈0.05） in best corrected visual acuity,operation time, ultrasonic emulsification time for grade m nucleus, and surgical complications between the two groups at 1 week, 1 month and 3 months after surgery. However, the ultrasonic emulsification time for grade IV nucleus was significantly shorter in 2.8 mm incision group （ P 〈 0.05 ）. Conclusion 2.2 mm incision is as safe and effective as 2.8 mm incision for cataract surgery.