SOME PHYSIOLOGICAL ASPECTS OF THE PRECORNEAL TEAR FILM.
SOME PHYSIOLOGICAL ASPECTS OF THE PRECORNEAL TEAR FILM.
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角膜前泪膜的一些生理学方面。
DOI：
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发表时间：
1965
期刊：
影响因子：
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通讯作者：
S. Mishima
中科院分区：
文献类型：
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作者：
S. Mishima
角膜前泪膜是角膜表面上非常薄的流体层。虽然它是泪液的一部分，但由于其形态学特性以及其对角膜的生理重要性，值得单独考虑。关于泪液的化学成分和流量的研究很多，但对角膜前区泪膜的研究有限。Wolff 2，3将角膜前泪膜描述为层状结构，并讨论了其生理学方面的一些问题。然而，他关于生理学的结论似乎是基于裂隙灯的观察。几位作者已经指出了泪膜对角膜的重要性。Smelser 4表明，通过泪膜吸收大气中的氧气对于正常的角膜代谢是必要的，而正常的角膜代谢又是维持正常的消肿状态所必需的
The precorneal tear film is a very thin fluid layer over the corneal surface. Although it is a part of the tear fluid, it deserves to be considered separately because of its morphologic peculiarities and also because of its physiologic importance for the underlying cornea. There have been numerous studies of the chemical composition and flow of tear fluid,1but studies of the precorneal tear film have been limited. Wolff2,3described the precorneal tear film as a layered structure and discussed some of its physiologic aspects. His conclusions on the physiology, however, seemed to be based on slit lamp observations. The importance of the tear film for the underlying cornea has been pointed out by several authors. Smelser4showed that the uptake of atmospheric oxygen through the tear film is necessary for normal corneal metabolism which, in turn, is essential for maintenance of the normal deturgescent state