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探讨了单纯型糖尿病视网膜病变(non—Prolifcrative diabtie retinopathy,NDR)患者视力与视网膜黄斑无血管区(foveal avascular zone,FAZ)大小的关系.应用微机图像处理系统,测算43只NDR患眼和20只正常眼眼底荧光血管造影负片上FAZ与视盘的面积比值.NDR视力正常组和正常对照间该比值无显著差异(P>0.05).在NDR视力下降组中,该比值显著大于上述两组(P<0.01)、且与患者视力呈显著切相关(P<0.001),其糖尿病程亦较NDR视力正常组长(P<0.05).结论:NDR患者糖尿病病程较长时,FAZ与视盘的面积比值增大到一定程度,将引起视力损害,且损害随该比值的增大而加重.
To investigate the relationship between visual acuity and the size of foveal avascular zone (FZ) in patients with simple type of diabetic retinopathy (NDR) .Through computerized image processing system, 43 eyes with NDR and 20 eyes The ratio of FAZ to optic disc in negative fundus fluorescein angiography showed no significant difference between NDR normal vision group and normal control group (P> 0.05), which was significantly higher in NDR eyes than in the above two groups (P <0.001), and the diabetic course was also longer than that of NDR group (P <0.05) .Conclusion: When the course of diabetes mellitus is longer in NDR patients, the area ratio of FAZ to optic disc Increase to a certain extent, will cause visual impairment, and the damage aggravated with the increase of the ratio.