玻璃体切割术前闪光视网膜电图与术后视力的关系

目的 :探讨玻璃体切割术前 F- ERG与术后视力的关系。方法 :对 5 0例行玻璃体切割手术的患者进行术前 F- ERG的测定 ,术后 2周对其视力进行测定 ,利用 SPSS软件包进行统计学处理。结果 :术前 F- ERG的 a波振幅与术后视力呈正相关 ;术前 F- ERG的 b波振幅与术后视力呈正相关 ;E值 ( E=La+ Lb/Aa+ Ab)与术后视力呈负相关 ;E小于等于 3.0者与 E大于 3.0组术后视力差异有显著性 ( P<0 .0 0 5 )。结论 :玻璃体切割术前进行正确的 F- ERG分析 ,有助于玻璃体切割术后视力的预测。

The relationship between preoperative F-ERG and postoperative visual acuities of vitrectomy

Objective: To investigate the relationship between preoperative ERG and the postoperative visual acuity (VA) in patients receiving vitrectomy.Methods:F ERG preoperatively and VA postoperatively in 50 patients receiting vitrectomy examined before vitrectomy and two weeks after the operation, respectively, then the data was treated with SPSS soft ware. Results:Both a and b wave amplitudes before operation were positively correlated with the postoperative visual acuity, wherease E(E=La+Lb/Aa+Ab) was negatively correlated with the postoperative VA, the VA was better if E was smaller than or equal to 3 0.The difference of blindness incidence between E>3 0 group and E≤3 0 group was significant ( P <0 005). Conclusion: The correct analysis of preoperative ERG will be helpful for predicting the postoperative VA of vitrectomy.