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目的 :用视网膜厚度分析仪 (retinalthicknessanalyzer,RTA)定量化检查视网膜厚度 ,了解常见眼底病视网膜厚度的定量变化。方法 :采用扫描式RTA观察正常眼及 2 6例 (46只眼 )各种眼底病变者 ,产生视网膜的系列光学切面像 ,得到视网膜地形图和厚度值。结果 :各种眼底病变在RTA上的形态改变为 :糖尿病性黄斑水肿眼 :视网膜厚度图显示有视网膜厚度增加和中心凹凹陷消失 ;中心性浆液性脉络膜视网膜病变 :玻璃体视网膜界面抬高 ,浆液性浅脱离 ;黄斑裂孔 :视网膜内界面的中断 ,可见孔周的视网膜下液和局部脱离 ;近视眼 :视网膜的萎缩性改变 ;黄斑前膜 :视网膜神经上皮前的膜状物伸进玻璃体内。上述图形都伴有量化数据分析。结论 :RTA显示的视网膜地形图和厚度图可提高对眼底疾病特别是黄斑疾病的诊断能力
OBJECTIVE: To quantitatively examine the retinal thickness with a retinal thickness analyzer (RTA) to understand the quantitative changes of retinal thickness in common fundus diseases. Methods: Scanning RTA was used to observe the normal retina and 26 cases (46 eyes) of various fundus lesions, producing a series of optical section images of the retina, retinal topography and thickness values were obtained. RESULTS: The morphological changes of various fundus lesions on RTA were: diabetic macular edema: retinal thickness map showing increased retinal thickness and foveal depression; central serous chorioretinopathy: elevated vitreoretinal interface, serous Macular hole: interruption of the inner retinal interface, we can see the peritoneal subretinal fluid and local detachment; myopia: atrophy of the retina; macular membrane: before the retinal nerve epithelial membrane into the glass body. The above figures are accompanied by quantitative data analysis. CONCLUSIONS: The retinal topography and thickness maps presented by RTA improve the diagnostic ability of fundus diseases, especially macular diseases