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角膜后弹力层历来被描述为一玻璃样薄膜,富有弹性,是由内皮细胞分泌的胶原纤维和粘多糖构成,具有再生能力。近年来进行了超微结构的研究,有了一些新的发现。一、角膜后弹力层的形成和正常形态正常的角膜后弹力层被认为是角膜内皮细胞的分泌物,是一层真正的弹力膜。1758年Descement描述为一玻璃样的透明膜,一直被认为是无结构的,通常称之为Descement膜。科学技术的日益进步揭示此层乃是一个板层结构的组织,是角膜内皮的基底膜,由成胶的和不成胶的醣蛋白组成。Krause认为含有大量氨基碳水化合物(Aminocarbohydrate)。Morner发现含有14.77%氮和0.9％硫。它的结构比人体内其它
The corneal posterior elastic layer has traditionally been described as a glass-like membrane that is elastic and consists of collagen fibers and mucopolysaccharides secreted by endothelial cells and has a regenerative capacity. In recent years, the study of ultrastructure has been carried out and some new discoveries have been made. First, the formation of the corneal posterior elastic layer and the normal form of normal corneal posterior elastic layer is considered to be the secretion of corneal endothelial cells, is a real layer of elastic membrane. 1758 Descement described as a glass-like transparent film, has always been considered unstructured, commonly known as Descement film. The increasing progress in science and technology reveals that this layer is a lamellar structure of the corneal endothelial basement membrane, composed of gelatinous and non-gelatinous glycoproteins. Krause thinks it contains a lot of Aminocarbohydrate. Morner found to contain 14.77% nitrogen and 0.9% sulfur. Its structure is other than the human body