特发性黄斑前膜手术前后光学相干断层扫描形态变化与视力的关系

目的 评估特发性黄斑前膜手术前后光学相干断层扫描形态变化与视力的关系.方法 回顾性分析在我院行玻璃体切割术+内界膜剥除术的特发性黄斑前膜患者32例(32眼)的临床资料,分析术前、术后光学相干断层扫描图像中黄斑中心凹的形态、中心凹厚度与最佳矫正视力的关系.结果 29例患者视力提高,3例患者视力无提高,最佳矫正视力由术前0.25±0.12提高至术后的0.49±0.28(P ＜0.05),所有患者黄斑中心凹厚度均有所下降,由术前的(385±115) μm降至术后的(241±64) μm(P ＜0.05).最佳矫正视力与黄斑中心凹厚度相关性分析呈负相关性,即黄斑中心凹越厚,视力越差.结论 特发性黄斑前膜手术前后黄斑中心凹形态变化与视力有密切关系,光学相干断层扫描可用于术前评估及术后追踪其转归.

Correlation between morphological changes in the macula and visual acuity before and after idiopathic macular epiretinal surgery

Objeetive To evaluate the morphological change in macuia in patients with idiopathic macuiar membrane and its relationship with visual acuity.Methods A retrospective study was conducted in 32 eye of 32 patients with idiopathic macuiar epiretinal membrane,who underwent the pars plana vitrectomy combined with internal membrane peeling.Then data on visual acuity and optical coherence variables,including the morphology and thickness of the fovea were collected and analyzed.Results Improvement in the best corrected visual acuity (BCVA) was observed in 29 patients,and the difference in the mean preoperative BCVA was statistically significant before surgery (0.25 ± 0.12) and after surgery (0.49 ± 0.28) (P ＜ 0.05).Unfortunately,3 patients maintained the same visual acuity after surgery.The thickness of the fovea decreased in all patients,from (385 ± 115) μm to (241 ± 64) μm (P ＜ 0.05).And the BCVA had a negative correlation with the thickness of the fovea.Conclusion The visual acuity of patients is closely related to the morphological feature of the macuia,and optical coherence tomography can be a useful tool for preoperative assessment and postoperative follow-up.