光学相干断层扫描定量糖尿病性黄斑水肿的黄斑厚度及与视功能相关分析

目的 观察糖尿病性黄斑水肿(DME)的光学相干断层扫描(OCT)临床特征,并探讨其与视功能改变的相关性.方法 40例49眼DME患者(DME组)及31例31眼无DME患者(对照组)分别应用OCT进行黄斑厚度定量分析,同时采用图形视觉诱发电位(P-VEP)及黄斑10°视野平均缺损(MD)指数检查视功能,根据DME组有无合并增生型糖尿病视网膜病变分为A组(非增生型糖尿病视网膜病变+DME,30眼)和B组(增生型糖尿病视网膜病变+DME,19眼).结果 DMEOCT图像定量分析发现,DME组黄斑厚度[(299.25±63.87)μm]较对照组[(204.35±37.94)μm]增厚,且视力、MD指数受损更为严重,其差异有统计学意义(P＜0.05).A组与B组的黄斑厚度、视力、MD指数比较差异均无统计学意义(P＞0.05);OCT黄斑厚度与视力存在线性负相关(r=-0.437,P＜0.05);OCT黄斑厚度与MD指数存在线性正相关(r=0.441,P＜0.05).结论 OCT为评估DME的发生、发展及疗效判断提供了一种有效、客观的检测手段,随着黄斑厚度的增加,视功能指标中视力下降、黄斑10°视野受损程度加重.

Abstract：

Objective To explore the clinical features of diabetic macular edema (DME) with optical coherence tomography (OCT) and correlation with visual function. Methods Forty-nine eyes from 40 patients with DME (DME group) and 31 eyes from 31 patients without DME (control group) were examined with OCT,pattern reversal visual evoked potentials (P-VEP),macular perimetry. According to proliferative diabetic retinopathy (PDR), 49 eyes with DME were divided into group A (without PDR, 30eyes) and group B (with PDR, 19 eyes). Results The retinal macular thickness of central fovea in DME group [(299.25±63.87)μm] was more than that in contol group [(204.35 ± 37.94)μm], visual acuity and macular visual field in DME group were significantly different than those in control group, respectively (P ＜ 0.05). The retinal macular thickness of central fovea,visual acuity and visual field were no significant differences between group A and group B (P＞0.05). OCT macular thickness and visual correlation coefficient was -0.437(P＜ 0.05 ); OCT macular thickness and mean defect correlation coefficient was 0.441(P ＜ 0.05). Conclusions OCT can provide a useful tool for monitoring the occurrence and development of DME, can assess the response to treatment. With increasing of the macular retinal thickness, the visual acuity and macular visual field of visual function are more damaged.

Correlation analysis of macular thickness with optical coherence tomography and visual function in diabetic macular edema

Objective To explore the clinical features of diabetic macular edema (DME) with optical coherence tomography (OCT) and correlation with visual function. Methods Forty-nine eyes from 40 patients with DME (DME group) and 31 eyes from 31 patients without DME (control group) were examined with OCT,pattern reversal visual evoked potentials (P-VEP),macular perimetry. According to proliferative diabetic retinopathy (PDR), 49 eyes with DME were divided into group A (without PDR, 30eyes) and group B (with PDR, 19 eyes). Results The retinal macular thickness of central fovea in DME group [(299.25±63.87)μm] was more than that in contol group [(204.35 ± 37.94)μm], visual acuity and macular visual field in DME group were significantly different than those in control group, respectively (P ＜ 0.05). The retinal macular thickness of central fovea,visual acuity and visual field were no significant differences between group A and group B (P＞0.05). OCT macular thickness and visual correlation coefficient was -0.437(P＜ 0.05 ); OCT macular thickness and mean defect correlation coefficient was 0.441(P ＜ 0.05). Conclusions OCT can provide a useful tool for monitoring the occurrence and development of DME, can assess the response to treatment. With increasing of the macular retinal thickness, the visual acuity and macular visual field of visual function are more damaged.