title: Oxygen levels beneath the closed eyelid.
abstract: 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.
mesh_terms: D000328:Adult; D003315:Cornea / Q000032:analysis*; D005143:Eyelids; D005260:Female; D006801:Humans; D008297:Male; D009584:Nitrogen / Q000032:analysis; D010100:Oxygen / Q000032:analysis*
chemical_list: D009584:Nitrogen; D010100:Oxygen