Efron N, Carney L G
Invest Ophthalmol Vis Sci. 1979 Jan;18(1):93-5.
The level of oxygen at the anterior corneal surface beneath the closed eyelid is shown to be equivalent to an atmosphere of 7.7% oxygen. This finding is in good agreement with assumptions which have been based on the oxygen level at the palpebral conjunctiva. However, in some instances a significant amount of oxygen is derived not only from the palpebral conjunctiva but also from the atmosphere as a result of an imperfect palpebral aperture seal.
闭眼时角膜前表面的氧气水平显示等同于7.7%氧气的大气环境。这一发现与基于睑结膜氧气水平的假设高度一致。然而，在某些情况下，由于睑裂密封不完善，大量氧气不仅来自睑结膜，还来自大气。
