黄斑囊样水肿患眼多波长炫彩成像影像特征和定量分析

目的观察黄斑囊样水肿(CME)患眼多波长炫彩成像(MC)的影像特征,初步评估MC在CME诊断中的应用价值。方法描述性研究。2017年8月至2018年6月在武汉大学人民医院眼科检查确诊的CME患者37例42只眼纳入研究。其中,男性24例,女性13例;平均年龄(48.51±10.29)岁。糖尿病视网膜病变14只眼,视网膜中央静脉阻塞14只眼,视网膜分支静脉阻塞8只眼,葡萄膜炎4只眼,Eales病2只眼。采用德国Zeiss公司Visucam 200免散瞳眼底照相机行眼底彩色照相(CFP)检查。采用德国Heidelberg公司Spectralis HRA2+OCT行MC、频域OCT(SD-OCT)、FFA检查。按MC标准方法,1次扫描同时获得基于488 nm的蓝光反射(BR)、515 nm的绿光反射(GR)、820 nm的红外光反射(IR)成像及标准MC和蓝绿加强(BG)等5个图像。参照SD-OCT图像,对CFP、MC图像进行评分。采用Friedman M检验和Wilcoxon符号秩和检验进行统计学处理。结果标准MC、BG像可见黄斑区片状蓝绿色隆起或花瓣状外观,周围环绕绿色隆起反射,边界清晰。BR像可见水肿区呈弱反射。GR像上可见黄斑区片状或囊样弱反射暗区,周围环绕稍强反射区。IR像可见黄斑区片状或囊样强反射,周围环绕弱反射暗区,边界清晰。CFP、标准MC、GB、IR、GR、BR像评分平均值分别为(1.20±0.94)、(3.05±0.99)、(2.90±1.04)、(2.55±1.27)、(2.00±0.94)、(0.51±0.85)分;不同成像间评分比较,差异有统计学意义(χ^2=151.61,P=0.000)。CFP评分显著低于标准MC(Z=-5.421)、BG(Z=-5.354)、IR(Z=-4.714)、GR(Z=-4.538)成像,高于BR成像(Z=-3.435),差异均有统计学意义(P=0.000、0.000、0.000、0.000、0.001)。结论MC质量明显优于CFP,结合SD-OCT可作为辅助诊断CME的手段。

Image characteristics and quantitative analysis of multicolor imaging in eyes with cystoid macular edema

Objective To observe the imaging features of cystoid macular edema(CME)in multicolor imaging(MC),and to evaluate the value of MC in the diagnosis of CME.Methods Descriptive case series study.From August 2017 to June 2018,42 eyes of 37 patients with CME diagnosed in the people's Hospital of Wuhan University were included in the study.Among them,there were 24 males and 13 females,with an average age of 48.51±10.29 years.There were 14 eyes with diabetic retinopathy,14 eyes with central retinal vein occlusion,8 eyes with branch retinal vein occlusion,4 eyes with uveitis,and 2 eyes with Eales disease.The macular color fundus photography(CFP)was performed with Visucam 200 non-mydriatic fundus camera of Zeiss company in Germany.MC,frequnce domainoptical OCT(SD-OCT)and FFA were examined by Spectralis HRA2+OCT of Heidelberg company in Germany.According to the MC standard method,five images,including 488 nm blue reflection(BR),515 nm green reflection(GR),820 nm infrared reflection(IR)imaging and standard MC and blue-green enhancement(BG),were obtained at the same time.Compared with SD-OCT,CFP and MC images were scored.Friedman M test and Wilcoxon signed rank test were used for statistical analysis.Results The standard MC and BG images showed blue-green uplift area or petal-shaped appearance,surrounded by green reflection areas with clear boundaries.BR image can be seen in the low reflexes area.On the GR image,there were patches or cystic low reflection areas,surrounded by a slightly high reflection.On the IR image,patches or cystoid high reflexes can be seen,surrounded by low reflection dark areas with clear boundaries.The average scores of CFP,standard MC,GB,IR,GR and BR were 1.20±0.94,3.05±0.99,2.90±1.04,2.55±1.27,2.00±0.94,0.51±0.85 respectively,and the differences were statistically significant(χ^2=151.61,P=0.000).The score of CFP were significantly lower than that of standard MC(Z=-5.421),BG(Z=-5.354),IR(Z=-4.714),GR(Z=-4.438)and higher than that of BR(Z=-3.435).The differences were statistically significant(P=0.000,0.000,0.000,0.000,0.001).Conclusions The quality of MC imaging is better than that of CFP.Combined with SD-OCT,it can be used as an assistant method to diagnose CME.