Hi. I'm online and happy to answer your question today.
Yes, it is very possible that a Cpap machine could have caused that.
I would try putting some mild ointment, such as Refresh PM, in your eyes tonight and see if things are better. I'd also check to make sure your mask is fitting tightly with no air leaks around your cheek and eyes.
For today, just use some natural tears 4 to 5x and as necessary along with cool compresses
Does this make sense to you?
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I see that you are offline. I'll switch over to the Q&A system. This system works a lot like 'text messaging' but an email is sent to each of us anytime something is posted to this thread. We can continue to work on your question there..... :)