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目的 探讨糖尿病视网膜病变 (diabeticretinopathy ,DR )黄斑中心凹无血管区 (fovealavascularzone ,FAZ)大小的影响因素。 方法 对 79例非增生期及增生早期DR患者采用Heidelberg激光扫描眼底荧光造影系统测定其FAZ ,以糖尿病病史 10年为界将患者分为 10年以内、10年及其以上 2个亚组 ,按全国统一的DR分期标准将DR分为 4期 ,根据黄斑部荧光素渗漏情况将黄斑水肿分为局限性、弥漫性及囊样水肿 3种形态。分别分析不同糖尿病病程、DR程度及黄斑水肿形态患者的FAZ大小 ,并将结果进行方差分析或t检验。 结果 糖尿病病程与FAZ的大小无关 (t =1.385 4,P >0 .1) ;不同DR程度患者之间FAZ的大小差异有显著性意义 (F =7.6 2 5 1,P <0 .0 1) ;不同黄斑水肿形态患者之间FAZ的大小差异亦有显著性意义(F =5 .436 9,P <0 .0 1)。 结论 糖尿病患者FAZ的扩大程度随DR加重而增加 ,但与病程无关。
Objective To investigate the influencing factors of the size of foveal vascular zone (FAZ) in diabetic retinopathy (DR). Methods 79 cases of non-proliferative and proliferative early DR patients were measured by Heidelberg laser fundus fluorescein angiography system to determine the FAZ, the history of diabetes mellitus 10 years as the community will be divided into 10 years, 10 years and above two subgroups, according to National DR standard DR will be divided into four phases, according to macular fluorescein leakage macular edema into three kinds of limitations, diffuse and cystic edema. The FAZ size of patients with different stages of diabetes, degree of DR and macular edema were analyzed respectively, and the results were analyzed by ANOVA or t-test. Results The duration of diabetes was not related to the size of FAZ (t = 1.385 4, P> 0. 1). There was significant difference in the size of FAZ between patients with different degrees of DR (F = 7.6251, P <0.01) There was also a significant difference in the size of FAZ between patients with different macular edema (F = 5.436, P <0.01). Conclusion The extent of FAZ in diabetic patients increases with the increase of DR, but has no relation with the course of disease.