Oxygen permeability of collagen shields.
Oxygen permeability of collagen shields.
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DOI：
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发表时间：
1990-02
影响因子：
4.4
通讯作者：
B. Weissman;N. Brennan;D. Lee;I. Fatt
中科院分区：
文献类型：
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作者：
B. Weissman;N. Brennan;D. Lee;I. Fatt
在水合约2小时时，通过极谱法直接测量10个24小时胶原蛋白屏障的透氧性（Dk）。计算中包括了边缘和边界效应。在35 ℃时，发现Dk约为26 × 10（-11）cm ml O2/sec ml mmHg。通过手持折射计测量，护罩的平均含水量为65.7%（SD = 1.0%）。因此，预计胶原蛋白屏障的氧透过率与正常角膜代谢相容。
The oxygen permeability (Dk) of ten 24-hr collagen shields was measured directly by polarographic methodology at approximately 2 hr of hydration. Edge and boundary effects were included in the calculations. Dk was found to be approximately 26 x 10(-11) cm ml O2/sec ml mmHg at 35 degrees C. Mean water content of the shields was 65.7% (SD = 1.0%) as measured by a hand refractometer. Therefore, the projected oxygen transmissibility of collagen shields is expected to be compatible with normal corneal metabolism.