EDI-OCT在视网膜分支静脉阻塞患者筛板厚度测量中的应用

摘要

目的 分析增强深部成像光学相干断层扫描(enhanced depth imaging optical coherence tomography,EDI-OCT)在测量视网膜分支静脉阻塞(branch retinal vein occlusion,BRVO)患者筛板厚度(lamina cribrosa thickness,LCT)中的应用价值.方法 收集2014年9月至2016年3月我院收治的65例单侧BRVO患者的临床资料作为观察组,选取同期来我院体检的40位正常人的单眼健康眼作为对照组,采用EDI-OCT测量两组全周视网膜神经纤维层(retinal nerve fiber layer,RNFL)厚度、LCT、中央角膜厚度、眼轴长度、视盘横径、视盘竖径、屈光度、视野缺损范围等指标的变化.结果 两组中央角膜厚度、眼轴长度、视盘横径、视盘竖径、屈光度比较差异均无统计学意义(均为P＞0.05);观察组视盘各区域LCT、全周RNFL厚度均低于对照组,差异均有统计学意义(均为P ＜0.05);观察组视野缺损范围高于对照组(P＜0.05).LCT与BRVO患者全周RNFL厚度呈正相关,与视野缺损呈负相关(P＜0.05).结论 EDI-OCT可作为活体LCT检测的有效手段,青光眼BRVO患者LCT较正常健康人薄,且其LCT与全周RNFL厚度呈正相关,与视野缺损呈负相关.%Objective To analyze the application value of enhanced depth imaging optical coherence tomography (EDI-OCT) in measuring the lamina cribrosa thickness(LCT) in patients with branch retinal vein occlusion (BRVO).Methods The clinical data of 65 patients with unilateral BRVO treated in our hospital from September 2014 to March 2016 were selected as the observation group.The single healthy eyes of 40 healthy individuals who received physical examination in the hospital during the same period were selected as the control group.The changes of retinal nerve fiber layer (RNFL) thickness,LCT,central corneal thickness,axial length,transverse diameter of optic disc,vertical diameter of optic disc,diopter and extent of visual field defect in the two groups were determined by EDI-OCT.Results There was no significant difference in the central corneal thickness,axial length,transverse diameter of optic disc,vertical diameter of optic disc and diopter between the two groups (all P ＞ 0.05).LCT of different regions of optic disc in the observation group were lower than those in the control group (all P ＜ 0.05).The range of visual field defects in the observation group was larger than that in the control group,and the RNFL thickness was lower than that in the control group (P ＜ 0.05).LCT was positively correlated with the thickness of whole RNFL in patients with BRVO,and was negatively correlated with the visual field defects (P ＜ 0.05).Conclusion EDI-OCT is an effective means for measuring LCT.LCT of patients with glaucoma BRVO is thinner than that of normal healthy people,and LCT is positively correlated with RNFL.thickness,and negatively correlated with visual field defects.