中文摘要：

目的：观察早期衰老大鼠视网膜色素上皮-光感受器细胞复合体超微结构的变化。方法：取3月龄及12月龄大鼠视网膜,制成半薄切片,透射电镜下观察视网膜色素上皮-光感受器细胞复合体超微结构的变化。结果：12月龄大鼠视网膜中出现视网膜色素上皮细胞（retinal pigment epithelium,RPE）凋亡和RPE-光感受器细胞复合体的退行性改变。结论：视网膜色素上皮-光感受器细胞复合体的退行性改变是视网膜衰老的早期表现。

英文摘要：

AIM： To observe the ultrastructural changes of retinal pigment epithelium （RPE） - photoreceptor complex in early aging rats. METHODS： Retinas of 3-month old and 12-month old rats were prepared into semi- thin sections and then observed under transmission electron microscope to evaluate the changes of RPE-photoreceptor complex. RESULTS： Apoptosis of RPE cells and degenerative changes of RPE-photoreceptor complex were found in retinas of 12-month old rats. CONCLUSION： RPE-photoreceptor complex degeneration is an early manifestation of the retinal aging.