【摘要】 目的探讨后发性白内障行Nd:YAG激光后囊膜切开术后屈光状态、眼生物学参数变化特点及其与后囊膜切口大小的关系。方法采用临床病例对照研究,选取2012年6月至2014年6月在广东省中医院眼科就诊的后发性白内障患者62例(62眼),将入选患者分为A组28例(28眼)、B组34例(34眼);两组患者均行Nd:YAG激光后囊膜切开术,A组术中形成4.0mm大小后囊膜切口,B组术中形成5.5 mm大小后囊膜切口,两组患者术前、术后均行最佳矫正视力(best corrected visual acuity,BCVA)、眼压、裂隙灯、眼底检查及等效球镜(spherical equivalent,SE)、前房深度(anterior chamber depth,ACD)及眼轴长度(axial length,AL)的测量,比较2组各项指标。结果术后两组患者BCVA均较术前明显提高,差异均有统计学意义(Z=-4.23、-5.09,均为P=0.000)。两组患者术前ACD值分别为(3.32±0.07)mm、(3.31±0.05)mm,术后分别为(3.45±0.07)mm、(3.48±0.07)mm,两组术前术后比较,差异均有统计学意义(Z=-4.58、-4.98,均为P=0.000);两组术前SE分别为(-0.29±0.44)D、(-0.29±0.57)D;术后分别为(0.47±0.40)D、(0.51±0.42)D,两组术前术后比较,差异均有统计学意义(Z=-4.69、-5.03,均为P=0.000)。但两组之间BCVA、ACD及SE比较,差异均无统计学意义(均为P>0.05)。AL值两组术后与术前比较及两组间比较,差异均无统计学意义(均为P>0.05)。结论后发性白内障Nd:YAG激光后囊膜切开术后存在人工晶状体轻微后移,导致术后远视漂移现象,但远视漂移程度与后囊膜切口大小无关。更多还原

【Abstract】 Objective To evaluate the changes of refractive status and ocular biological parameters in posterior capsule opacification(PCO) patients after Nd:YAG laser capsulotomy.Methods Sixty-two cases(62 eyes) with PCO were recruited from June 2012 to June2014 in Guangdong Province Hospital Of Traditional Chinese Medical.The patients were divided into two group.group A received laser capsulotomy with 4 mm diameter,and group B with 5.5 mm diameter.The best corrected visual acuity(BCVA),spherical equivalen(SE),anterior chamber depth(ACD) and axial lengths(AL) of patients were recorded before and one mouth after the surgery.Results The postoperative BCVA in two groups of patients was obviously improved compared with the pre-operation(Z =-4.23,-5.09;both P = 0.000).The preoperative ACD of two groups were(3.32 ± 0.07) mm,(3.31 ± 0.05) mm,respectively,while postoperative AC D were(3.45 ±0.07) mm,(3.48 ±0.07) mm,respectively,there were significant differences between pre-operation and post-operation in group A and B(Z=-4.58,-4.98;both P=0.000),The preoperative SE in two groups were(-0.29±0.44) D,(-0.29 ±0.57) D Respectively,while the postoperative SE were(0.47 ±0.40) D,(0.51 ±0.42) D Respectively,there were significant differences between pre-operation and post-operation in group A and B(Z =-4.69,-5.03;both P = 0.000).But there was no significant difference in BCVA,SE,ACD between two groups(all P > 0.05).There was no significant difference in AL of two groups after surgery compared with the preoperative and the comparison between the two groups(all P>0.05).Conclusion Hyperopic shift exists in PC 0 patients after Nd:YAG laser capsulotomy,but the change is not related with the incision size of posterior capsulotomy.更多还原