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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。
Objective: To investigate the relationship between F-ERG and visual acuity after vitrectomy. Methods: 50 preoperative F-ERG were measured in 50 patients who underwent vitrectomy. The visual acuity was measured 2 weeks after operation, and SPSS software package was used for statistical analysis. Results: There was a positive correlation between a-wave amplitude of preoperative F-ERG and postoperative visual acuity. Preoperative B-wave amplitude of F-ERG was positively correlated with postoperative visual acuity. E value (E = La + Lb / Aa + Ab) Negative correlation; E less than or equal to 3.0 and E greater than 3.0 group postoperative visual acuity difference was significant (P <0.05). CONCLUSION: Correct F-ERG analysis before vitrectomy is helpful for predicting vision after vitrectomy.