Diabetic macular edema(DME)is a manifestation of diabetic retinopathy(DR),which can occur at any stage of DR and is one of the most common causes of vision loss in patients with DR.The choroid is the only source of blood supply to the macular fovea,so choroidal abnormalities can damage retinal function.The commonly used choroidal biomarkers are subfoveal choroidal thickness(SFCT)and choroidal vascularity index(CVI).SFCT and CVI reflect the choroidal blood flow,especially CVI,which has a great application prospect in monitoring the progress of DME and evaluating the prognosis.Understanding the baseline choroidal characteristics and the changes of choroidal vessels after anti-vascular endothelial growth factor(VEGF)treatment has important guiding significance for evaluating the therapeutic effect and prognosis of DME.
关键词
糖尿病性黄斑水肿/抗血管内皮生长因子/中心凹下脉络膜厚度/脉络膜血管指数
Key words
diabetic macular edema/anti-vascular endothelial growth factor/subfoveal choroidal thickness/choroidal vascularity index