Iwasaki M, Ishibashi T, Inomata H, Taniguchi Y
Graefes Arch Clin Exp Ophthalmol. 1987;225(3):177-84. doi: 10.1007/BF02175446.
Retinal sheathed vessels from five patients with various vascular diseases were examined by light and electron microscopy. All of these vessels were characterized by a marked increase and disarrangement of collagen fibrils in the media and adventitia. Cytoplasmic processes of glial cells had invaded the adventitia in sheathed vessels and even in unsheathed ones. Thickening and multilamination of the basal laminae were observed in both the sheathed and unsheathed vessels. The lumens of most sheathed vessels were still patent, and the blood cells and endothelial cells of these vessels appeared to be intact. We found no essential differences in the ultrastructure of these vessels in the five patients with various vascular diseases. It is concluded that the increase and disarrangement of collagen fibrils may be mainly related to the ophthalmoscopic appearance of the sheathing and that other factors seem to be of lesser significance.
对五名患有各种血管疾病患者的视网膜鞘状血管进行了光镜和电镜检查。所有这些血管的特征是中膜和外膜中的胶原纤维显著增加且排列紊乱。神经胶质细胞的细胞质突起已侵入鞘状血管甚至未鞘化血管的外膜。在鞘状血管和未鞘化血管中均观察到基底膜增厚和多层化。大多数鞘状血管的管腔仍然通畅，这些血管的血细胞和内皮细胞似乎完好无损。我们发现这五名患有各种血管疾病患者的这些血管的超微结构没有本质差异。得出的结论是，胶原纤维的增加和排列紊乱可能主要与鞘膜的检眼镜外观有关，而其他因素似乎意义较小。
