If the cornea relies on atmospheric oxygen, then how does it get oxygen when a person is asleep? Won’t the eyelids block access to the air?
If the cornea relies on atmospheric oxygen, then how does it get oxygen when a person is asleep? Won’t the eyelids block access to the air?
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The inside of the eyelid is vascular so some oxygen is delivered to the cornea from there, but it’s not enough so there is a bit of swelling when you are asleep and you might notice some foggyness after waking up