特发性黄斑裂孔手术治疗后视物变形度的评估

目的 观察特发性黄斑裂孔(IMH)成功手术治疗后视物变形改善,分析手术后视物变形度与手术前黄斑裂孔指数(MHI)、黄斑裂孔预后因数(HPF)以及手术后视力之间是否关联.方法 30例经玻璃体切割联合内界膜剥离手术治疗后光相干断层扫描(OCT)检查证实黄斑裂孔闭合且随访时间≥6个月的IMH患者的60只眼纳入研究.患者均为单眼发病,对侧眼裸眼视力大于20/25且无视物变形.手术前后均进行最佳矫正视力(BCVA)检查,并通过OCT及视物变形表(M-Chart表)进行黄斑裂孔及黄斑区视网膜形态、视物变形度检查.测量患眼垂直变形度(MV)与水平变形度(MH),以及手术前黄斑裂孔基底直径、黄斑裂孔最窄直径、裂孔边缘高度,计算裂孔边缘高度与基底直径比,即MHI和裂孔边缘高度与最窄直径比,即HPF.M-chart值为MV和MH的平均值.手术前患眼MV和MH平均值分别为(1.82±0.04).和(1.81±0.04)..采用SPSS 16.0统计分析软件对数据进行分析.结果 手术后6个月随访时患眼MV与MH分别为(0.17±0.03).和(0.11±0.03).,与手术前比较,差异有统计学意义(Z=-0.788,P＜0.05).手术后M-chart值与手术后最小视角对数(logMAR)BCVA正相关(r=0.504,P=0.004),与MHI、HPF负相关(r=-0.676,-0.518,P值均＜0.05).结论 成功的玻璃体切除联合内界膜剥离手术可明显改善IMH患者的视物变形,手术后视物变形度与手术前黄斑裂孔形态、手术后视力相关.

Abstract：

Objective To evaluate quantification of metamorphopsia in eyes with idiopathic macular hole (IMH) before and after surgical treatment, and investigate its relationship between postoperative visual acuity, the macular hole index (MHI), and the macular hole prognostic factor (HPF). Methods Thirty eyes of 30 patients, who underwent successful vitrectomy and internal limiting membrane (ILM) peeling for IMH and were followed up more than 6 months, were included in the study. The uncorrected visual acuity of the fellow eyes was better than 20/25 and there was no metamorphopsia in that eye. The macular hole closure was confirmed by optical coherence tomography (OCT) scans. Metamorphopsia was evaluated by metamorphopsia-charts (M-chart). OCT, best corrected visual acuity (BCVA) and metamorphopsia were obtained before and after surgery. Vertical (MV) and horizontal (MH) metamorphopsia, macular hole index (MHI, the ratio of the height to the diameter of the base) , and macular hole prognostic factor (HPF,the ratio of the height to the minimum diameter) were measured. The metamorphopsia score was the average value of MV and MH. SPSS 16. 0 statistical analysis software was used for data analysis. Results Preoperative MV and MH were (1.82±0.04)° and (1.81±0.04)°, respectively. Six months after surgery,the MV and MH were (0.17±0.03)° and (0.11±0.03)° respectively. There was significant difference between pre- and post-operative metamorphopsia results (Z=-0.788, P＜0.05). The metamorphopsia score at 6 months after surgery were positively correlated with the value of the postoperative BCVA (LogMAR) (r=0.540, P=0.004) and negatively correlated with the values of preoperative MHI and HPF (r=-0.676,-0.518; P＜0.05). Conclusions Successful vitrectomy and ILM peeling can improve metamorphopsia of IMH. Postoperative metamorphopsia was correlated with the postoperative BCVA and the preoperative macular hole contour.

Quantification of metamorphopsia in patients with idiopathic macular hole after successful surgical treatment

Objective To evaluate quantification of metamorphopsia in eyes with idiopathic macular hole (IMH) before and after surgical treatment, and investigate its relationship between postoperative visual acuity, the macular hole index (MHI), and the macular hole prognostic factor (HPF). Methods Thirty eyes of 30 patients, who underwent successful vitrectomy and internal limiting membrane (ILM) peeling for IMH and were followed up more than 6 months, were included in the study. The uncorrected visual acuity of the fellow eyes was better than 20/25 and there was no metamorphopsia in that eye. The macular hole closure was confirmed by optical coherence tomography (OCT) scans. Metamorphopsia was evaluated by metamorphopsia-charts (M-chart). OCT, best corrected visual acuity (BCVA) and metamorphopsia were obtained before and after surgery. Vertical (MV) and horizontal (MH) metamorphopsia, macular hole index (MHI, the ratio of the height to the diameter of the base) , and macular hole prognostic factor (HPF,the ratio of the height to the minimum diameter) were measured. The metamorphopsia score was the average value of MV and MH. SPSS 16. 0 statistical analysis software was used for data analysis. Results Preoperative MV and MH were (1.82±0.04)° and (1.81±0.04)°, respectively. Six months after surgery,the MV and MH were (0.17±0.03)° and (0.11±0.03)° respectively. There was significant difference between pre- and post-operative metamorphopsia results (Z=-0.788, P＜0.05). The metamorphopsia score at 6 months after surgery were positively correlated with the value of the postoperative BCVA (LogMAR) (r=0.540, P=0.004) and negatively correlated with the values of preoperative MHI and HPF (r=-0.676,-0.518; P＜0.05). Conclusions Successful vitrectomy and ILM peeling can improve metamorphopsia of IMH. Postoperative metamorphopsia was correlated with the postoperative BCVA and the preoperative macular hole contour.