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目的 研究后像消逝试验与 DR早期诊断的相关性。方法 对 NIDDM者 75眼、正常对照 46眼分别检测后消逝试验、FFA及 30°范围视网膜光敏度。结果 正常对照组的 TFC与 NDR组、DR组比较 ,P <0 .0 1,差异非常显著。 NIDDM者中 ,视网膜光敏度正常组与下降组比较 TFC,P <0 .0 1,差异非常显著。 NDR者中 ,病程≤5年组与 >5年组的 TFC比较 ,P <0 .0 1,差异非常显著。结论 后像消逝试验可作为 DR早期诊断和判断预后的重要参考指标
Objective To study the correlation between afterimages and early diagnosis of DR. Methods 75 cases of NIDDM, 46 cases of normal control were measured after the disappearance of test, FFA and 30 ° range of retinal photosensitivity. Results The difference between TFC and NDR group and DR group in normal control group was P <0.01, the difference was significant. In NIDDM, the difference between TFC and normal control group was significant (P <0.01), and the difference was significant. In NDR, the difference of TFC was less than 5 years in ≤5 years group and> 5 years group, P <0.01, the difference was significant. Conclusions Post-extinction test can be used as an important reference for early diagnosis and prognosis of DR