Roscoe W R, Wilson G S
Am J Optom Physiol Opt. 1984 Aug;61(8):538-42.
The equivalent oxygen percentage (EOP) technique of Hill and the technique of Rasson and Fatt are two commonly used methods to quantify the oxygen tension underneath a contact lens for the open-eyelid case. This study compares these two techniques. Five subjects and six contact lenses of various center thicknesses and oxygen transmissibilities were used. Each subject wore each lens for which the oxygen tension was measured by these two methods. For lenses of approximately 0.23 mm center thickness, the two methods gave similar oxygen values. For contact lenses significantly thicker or thinner, the two methods gave very different oxygen values. However, these oxygen values were related in a specific manner; a strong linear relation was found for contact lens center thickness vs. the ratio of the two oxygen values found by the two methods.
希尔的等效氧百分比（EOP）技术以及拉森和法特的技术是两种常用于量化睁眼情况下隐形眼镜下方氧张力的方法。本研究对这两种技术进行了比较。使用了五名受试者和六种具有不同中心厚度和透氧性的隐形眼镜。每位受试者佩戴每种镜片，并用这两种方法测量其氧张力。对于中心厚度约为0.23毫米的镜片，两种方法得出的氧值相似。对于明显更厚或更薄的隐形眼镜，两种方法得出的氧值差异很大。然而，这些氧值以一种特定的方式相关；发现隐形眼镜中心厚度与两种方法测得的两种氧值之比之间存在很强的线性关系。
