【摘要】 目的探讨老年人睫状体胶原纤维三维立体结构,明确其解剖特点。方法采取2例老年男性供体眼睫状体,以氢氧化钠细胞浸解法处理7 d,制备光学显微镜及扫描电子显微镜标本并观察。结果老年人睫状体大体形态与正常年轻人群相似。睫状体基质部胶原纤维排列不规则,放射状与环形睫状肌内大量胶原纤维呈束状环形排列,平坦部呈蜂窝状结构,胶原纤维交错排列。结论老年人老视的发生可能与其特殊的睫状体胶原纤维三维立体结构有关。更多还原

【Abstract】 Objective To visualize the three-dimensional arrangement of collagen fibrils in aged human ciliary body and discuss their significance.Methods The ciliary bodies obtained from 2 human eyes were treated with a NaOH cell-maceration method for 7 d,and then prepared conventionally for light and scanning electron microscopy.Results The general morphology of the collagen tissue in the ciliary body appeared almost the same as that normally observed.In the stroma of the ciliary body,collagen fibrils were arranged irregularly.In the areas of the radial and circular ciliary muscles,considerable numbers of collagen fiber bundles were observed running in a circular direction.A honeycomb structure was seen in the pars plana,the walls and the base of which were formed by interweaving collagen fibrils.Conclusion Collagen fibrils in the aged human ciliary body may be largely involved in the presbyopia.更多还原