Oxygen permeability of contact lens materials: a 1993 update

PhD, FAAO Irving Fatt, BA Constance M. Ruben
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引用次数: 13

Abstract

Oxygen permeability of currently marketed hydrogel contact-lens materials is predictable from water content, asituation that has not changed for 30 years. Experimental hydrogels with greater oxygen permeability than expected from their water content have been tested but none are currently marketed. Rigid gas permeable (RGP) materials are very different. In 1993, RGP lenses manufactured from materials of permeability 10E-11 (cm2/sec) (ml O2/ml × mmHg) up to 200E-11 (cm2/sec) (ml O2/ml × mmHg) are available to practitioners. The RGP permeability data are more reliable than in previous years because the measurement methods have become standardised and reference materials are available.

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隐形眼镜材料的透氧性:1993年更新
目前市场上销售的水凝胶隐形眼镜材料的透氧性可以通过含水量来预测,这种情况30年来没有改变。已经测试了比其含水量预期的更大的透氧性的实验性水凝胶,但目前还没有上市。刚性透气性(RGP)材料是非常不同的。1993年,使用渗透性为10E-11 (cm2/sec) (ml O2/ml × mmHg)至200E-11 (cm2/sec) (ml O2/ml × mmHg)的材料制造的RGP镜片可供从业人员使用。由于测量方法的标准化和参考资料的可得性,RGP渗透率数据比往年更加可靠。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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