- Paulo Coelho (Brazilian Novelist - The Alchemist - 1947 - Present)
It was due to gravity and that water is heavier than air. So came the second Aha moment. When you lie on your side, the gravity together with the air combining with humidification from the humidifier causes the air to be heavier and drop faster down the eye tear duct. As more humidity is used, the heavier the air is as the air becomes more like water. This will lead to the air going under the eye lids leading them to “flap in the wind” and may wake you up constantly through the night.
In addition, the friction caused by the tear duct itself will also assist. However, for this solution to work will depend on the sleep apnea machine pressure and that you have no other issues such as an eye DCR surgery on the other eye and neck and shoulder issues.
Since originally writing this blog post, in early 2021 I began using a very high starting IPAP of 18.2 cmH2O and EPAP of 13.0 cmH2O (inhale and exhale pressure) which may cause air coming out the eyes. Top pressure during the night may be more than 20 cmH2O! This was essential to stop hypoxia (oxygen desaturation) and sleep disordered breathing causing the symptoms of Dementia. In addition, eye cataracts are also associated with Alzheimer's Dementia.
More details are on the blog posts:
Air through Eye Tear Duct - Introduction
CPAP Air coming out of the Eyes
CPAP Settings to Stop Air coming out the Eyes
CPAP Air out Eyes and Tear Ducts: Other Options
CPAP Air out Eyes and Tear Ducts: Other Options (Part 2)