I know that the blood veins in eye crack from high blood pressure after smoking weed for instance, but am really interested in the mechanism when your eyes are red from the lack of sleep or even pollen allergy
In: Biology
So, what would cause this when you wake up but not during the day when your eyes are open and blinking? The lack of oxygen/ocoular ischemia answer doesn’t do it for me because, why would you only have a lack of oxygen to your eyes at night? Why not the rest of you? Which of course would lead to other systemic symptoms. And the oxygenation of everybody’s corneas is decreased at night but since there are blood vessels in the conjunctiva (but not the cornea) the conjunctiva will get adequate oxygen at night as long as blood flow is adequate and there is sufficient oxygen in the system. So, there is something causing some inflammation of the conjunctiva overnight, but not as much during the day, and it’s chronic (every night), and it’s relatively benign (no long term deleterious effects).
Most likely answer? BLEPHARITIS. It’s common, causes the symptoms and signs you describe, and in the short term, has few sequlae. It could be allergies, but that’s usually accompanied by itching, and unless it’s due to your pillow or something you put in your eyes at night, it’s unlikely to be the answer.
As always, (sigh) see your ophthalmologist or optometrist, don’t use Quora answers for your medical decisions, anyone can pretend they know stuff on the internet, I could be punking you, and I could be an out of work plumber. Or anything.
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