黄斑裂孔指数与特发性黄斑裂孔手术视力预后的相关性分析

目的 评价黄斑裂孔指数(MHI)与特发性黄斑裂孔(IMH)视网膜内界膜剥离手术后视力预后的相关性.方法 30例接受玻璃体切割联合视网膜内界膜剥离手术治疗的IMH患者的30只眼纳入研究.患者均进行最佳矫正视力(BCVA)、裂隙灯显微镜、间接检眼镜及光相干断层扫描(OCT)检查确诊.OCT测量视网膜中心厚度,黄斑裂孔底径和高,计算黄斑裂孔高与底径比值,即MHI,并根据MHI大小将患者分为MHI≥0.5组和MHI＜0.5组.手术后随访3～24个月,平均随访时间10个月.将手术后BCVA与患者年龄、病程、MHI及手术前BCVA进行斯珀曼(Spearman)相关性分析,对MHI≥0.5组和MHI＜0.5组手术后BCVA差异进行独立样本设计定量资料t检验.结果 手术后30只眼黄斑裂孔闭合,闭合率为100%.患者手术后BCVA与MHI之间有相关性(r=0.852,P＜0.001),与年龄、病程等变量无相关性(r年龄=0.001,P=0.804;r病程=-0.001,P=0.579).MHI≥0.5组手术后视力好于MHI＜0.5组(t=5.552,P＜0.001).结论 MHI与IMH患者视网膜内界膜剥离手术后视力存在相关性,可作为其手术后视力的预测指标之一.

Correlation analysis of the post-surgery visual outcomes of idiopathic macular hole and the macular hole index

Objective To evaluate the relevance of the macular hole index (MHI) and the visual outcomes of the idiopathic macular hole (IMH) after the retinal internal limiting membrane (ILM) peeling surgery. Methods Thirty IMH patients (30 eyes) undergoing vitrectomy and ILM peeling were included in this study. The IMH diagnosis was confirmed by best corrected visual acuity (BCVA), slit lamp microscope, indirect ophthalmoscope and optical coherence tomography (OCT). The central retinal thickness, the height and the base diameter of macular holes were measured by OCT. The MHI was the ratio of the height and the base diameter of macular holes. The patients were divided into two groups (MHI ≥0.5 group and MHI ＜0. 5 group) according to the MHI. The post-surgery follow-up was three to 24 months with an average of 10 months. Spearman correlation analysis was performed between BCVA (pre and post-surgery), age, disease duration and MHI. The differences in BCVA after surgery between the two MHI groups was further evaluated by independent samples t test for quantitative data. Results All the macular holes in 30 eyes closed after surgery, closure rate was 100%. Postoperative BCVA was correlated with MHI by Spearman analysis (r=0.852, P＜0.001), but not correlated with age (r=0.001, P=0.804) and disease course (r=-0. 001, P=0. 579). Postoperative BCVA was better in the MHI≥0. 5 group (t = 5. 552, P ＜ 0. 001 ). Conclusions The postoperative visual outcome of IMH patients was correlated with the MHI. MHI can be used as a prognostic factor of postoperative visual outcomes for IMH patients.