新型人工晶体推送器对白内障术后角膜散光影响的临床研究

Clinical study on the effect of new type intraocular lens unfolder on postoperative astigmatism

目的 :评价2.6mm口径的新型人工晶体推送器 (EmeraldT推送器 )对白内障超声乳化人工晶体植入术后角膜散光的影响。方法 :将160例 (160眼 )老年性白内障患者随机分为两组 :A组为2.6mm口径的EmeraldT人工晶体推送器组 ;B组为3.2mm口径的Sapphire人工晶体推送器组。所有患者均行经透明角膜超声乳化人工晶体植入术 ,术后1周、1月、3月采用角膜地形图仪比较两组角膜散光的变化情况。结果 :A、B两组术后1周、1月、3月平均手术源性角膜散光 (D)分别为 :0.36±0.20、0.33±0.23、0.31±0.22 ;0.78±0.61、0.69±0.58、0.58±0.44 ;两组间差别有统计学意义 (P<0.05)。术后1周及1月 ,A、B两组裸眼视力≥0.5者分别为 :74眼(92.50% )、77眼 (96.25 % ) ;62眼 (77.50 % )、70眼 (87.50 % ) ,两组间差别有统计学意义 (P<0.05) ,术后3月两组裸眼视力≥0.5者分别为 :77眼 (96.25 % )、73眼 (91.25 % ) ,两组间差别无统计学意义 (P>0.05)。结论 :2.6mm口径的EmeraldT人工晶体推送器所需手术切口小、术后散光小、视力恢复快且稳定 ,是目前较为理想的小切口人工晶体植入装置。

Objective:To evaluate the effect of2.6mm diameter intraocular lens unfolder(Emerald T unfolder)on postoperative corneal astigmatism after phacoemusification.Methods:Phacoemusifications were performed on160cases(160eyes)without suture for a corneal inciˉsion.The changes of corneal astigmatism and visual acuity(VA)before and after operation in group A(with Emerald T unfolder)and group B(with Sapphire unfolder-3.2mm diameter)were compared.Results:One week,one month and,three months after the surgery,the surˉgical induced astigmatism was(0.360.20)D,(0.33±0.23)D,(0.31±0.22)D in group A and(0.78±0.61)D,(0.69±0.58)D,(0.58±0.44)D in group B respectively,and the difference between two groups is statistically significant(P<0.05).The VA equal to or more than0.5in74eyes(92.50%),77eyes(96.25%)in group A and in62eyes(77.50%),70eyes(87.50%)in group B respectively one week and one month after the surgery,and the difference between two groups is statistically significant(P<0.05).The VA equal to or more than0.5in77eyes (96.25%)in group A and in73eyes(91.25%)in group B three months after the surgery,there was no statistical significance between two groups(P>0.05).Conclusion:Using Emerald T unfolder,the corneal incision will be much smaller which result in smaller surgical induced astigmatism and satisfactory postoperative VA.