05 January 2020

How to Stop Eye Tear Duct Air Regurgitation?

“The simple things are also the most extraordinary things, and only the wise can see them.”
- Paulo Coelho (Brazilian Novelist -
The Alchemist - 1947 - Present)

On the blog post, Air through Eye Tear Duct, I mentioned that it was after I had two Aha moments that I came to realize what the solution was to stop or reduce greatly CPAP air coming through the eye tear duct or nasolacrimal duct. How to stop lacrimal duct air regurgitation into the eye and air coming out the eye? The solution had been staring me in the face for a long time; however I could not see it! The solution is SIMPLE not complex as the sleep medical specialists would have you believe. 

In addition, there is no need to use a total face mask as detailed in the previous blog post CPAP Air coming out of the Eyes. A person can use any type of sleep apnea mask including nasal and full face mask.

The first Aha moment came just after I filled a bucket with water to wash the car. There was dirt on the driveway and so I automatically put my finger over part of the end of the hose to wash the dirt away. It was at that precise moment that I realized that it was the increased force of water that was causing the air to come through the eye tear duct and out of the eyes. 

As noted in CPAP Air coming out of the Eyes, when using the sleep apnea machine, the increased “force of water” is the air coming out faster and further from the eye tear duct due to the small area or opening of the tear duct when compared to the nose. The water was from the heated humidifier in the sleep apnea machine combining with the air.  

Reduce or stop using humidification and you are left with a much lighter fluid in air. By doing so as well as reducing the median/ average pressure from the sleep apnea machine will for most people allow you to overcome the issue of air through the eye tear duct and coming out of the eyes. Details of how to stop using the Humidifier are on the blog posts Why NOT to use a CPAP Humidifier? and Stop CPAP causing Mask Leaks.  
 
The second Aha moment came a few days after the first Aha moment. I was standing in the kitchen and it started to rain. The rain was falling to the ground. Why was the rain falling and not going upwards? 

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. 

The air will also lead to irritation of the eyes and you will wake up with terrible, painful red sore eyes in the morning as well as being totally exhausted from lack of quality sleep. I did not look forward to going to sleep at night as I knew each morning I would wake up with the same pain and suffering as the previous morning! 

Without adequate tears, you may have an increased risk of eye infection. In addition, damage may occur to the surface of your eyes. If left untreated, severe dry eyes may lead to eye inflammation, abrasion of the corneal surface, corneal ulcer and vision problems. Further details are at:

The easiest solution is to turn over to your other side so that the “good” eye or the eye that has had eye dacryocystorhinostomy (DCR) surgery is on top and you stay on the one side all night. This means that the air will have to go up rather than down with gravity. 

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.

From the two Aha moments and the principle of filling up a bucket with water using a hose as detailed in CPAP Air coming out of the Eyes, I realized that The Secrets to Success to stop or reduce air coming through the eye tear duct and out of the eyes were to do one or more of the following:

1. Reduce or stop using humidification from the humidifier; 

2. Reduce the median/ average pressure from the sleep apnea machine;

3. Reduce the volume of air or Tidal Volume (TV) that you are breathing in.

Note that should you stop using the humidifier, consideration still needs to be given to the humidity in the room where you sleep. Even when I stopped using the humidifier, I found that the humidity in the air can affect the sleep machine maximum pressure that you can use by up to 1 cmH2O. In addition, for some people extra steps may need to be taken to resolve the problem of air coming out of the eyes. More details are on later blog posts CPAP Air out Eyes and Tear Ducts: Other Options and Other Options (Part 2).

Should you have nasal issues when you stop or reduce using humidification, I recommend you read Stop CPAP Nasal Congestion and Nose Bleeding for a quick, easy and very cost effective solution which may work for you. I put medical paper tape over a portion of both nostrils at the middle section of each nostril. An added bonus is that by using the tape, there is an estimated small reduction in the volume of air of about 3% to 4% coming out the eyes.

For points 2 & 3, for further details, refer to Guide to Success using CPAP and Bilevel.

Importantly, whilst I use a Bilevel or BiPAP Auto Adjusting machine, for those people using pressure of 12 cmH2O or lower, a CPAP machine may be all that they require. Even though my maximum or top pressure may go up to 17 cmH2O during the night, the bilevel machine has been set to only use the top pressure required as necessary to cover obstructive sleep apnea. This contrasts with the CPAP fixed pressure machine which operates at maximum pressure all night. 

The biggest benefit for those people who have air coming out of the eyes is that when I stopped using the humidifier, I was able to increase the maximum pressure by more than 33% to 12 cmH2O fixed pressure from 9 cmH2O using pressure support of 3 cmH2O.Using the Bilevel Auto Adjusting machine, the maximum pressure increased by more than 88% to 17 cmH2O using pressure support of 5 cmH2O or more!  Details are on blog pages CPAP Vs Bilevel Settings Example and Different Bilevel Settings Example

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: 

What BiPAP Settings prevent Alzheimer's due to REM sleep breathing issues?

 
 
Further details on how to overcome the issue of air through the eye tear duct and coming out the eyes using any sleep apnea mask and how two Aha moments gave me the answer are on the following 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)


Should you be having side effects and issues with your sleep apnea therapy; CHANGE what you are doing so that you can wake up feeling refreshed and energized each day. 

“Have courage. Be adventurous and Go for it! Overcome your fear.”
- Mrhelpful    
 

07 December 2019

CPAP Air coming out of the Eyes

“Do not go where the path may lead, go instead where there is no path and leave a trail.” 
- Ralph Waldo Emerson (American Essayist & Poet – 1803 - 1882)

Over the next few blog posts I will detail how to stop CPAP air coming out of the eyes using a sleep apnea machine. Before doing so, I will make some comments about a research study published online in August 2018. In addition, I will explain why using a total face mask is not the answer for many people as the sleep medical specialists and equipment suppliers may advise to stop air coming through the eye tear ducts or nasolacrimal ducts and out of the eyes.  

A Novel Treatment for Nasolacrimal Air Regurgitation Into the Eye With CPAP: The Total Face Mask. Wrede JE, Parsons EC, Watson NF. J Clin Sleep Med. 2018;14(8):1415–1417.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6086962/    

1. The sleep medical researchers are saying that they have come up with a “Novel” treatment of using a total face mask. However, a review of the various sleep apnea forums shows that using a total face mask has been mentioned many times on the forums since at least 2004. That is, nearly 14 years before this research study was published!   
http://www.cpaptalk.com/viewtopic.php?t=16093 

2. The study uses just 1 patient as the basis of its research using mean pressure of only 9 cmH2O. Also noted is that the patient used the mask for what I consider a low average of 4 hours and 44 minutes per night for 90% of nights over a 30 day period. In addition, the patient had a high average AHI of 3.7 events/ h when compared to successful users on the various sleep apnea forums.
Given that only 1 patient was used and the average for all patients is estimated at 10 cmH2O, it is considered this is insufficient research to justify the use of a total face mask by sleep medical specialists and equipment suppliers. In addition, when I use a total face mask with pressure up to 17 cmH2O, air still comes through one of my eye tear ducts and out of the eye.  
3. A total face mask is a very hard mask to tolerate for many people. It is a mask of “last resort” when all other masks such as nasal pillows and nasal have failed. I found the mask a little claustrophobic due to the mask covering the whole face and it felt hot on the face due to the large thickness of the silicone mask surface sitting on your face. In addition, I could not sleep properly on my side due to the mask being bulky and the mask at times leaked badly, waking me up during the night.      
4. On the Blog Post Why NOT to use a CPAP Humidifier? I advised to breathe through your nose. Breathing through your mouth using a Full Face Mask and a Total Face Mask will lead to dry sore throat and dry mouth and possible dental health issues such as bad breath.
The nose is like a humidifier whereby it will warm, humidify and moisten the air that you are breathing in. In addition, breathing through your nose kills deadly bacteria and viruses and traps dust particles. This is one of the reasons serious consideration should be given to using nasal pillows and nasal masks where possible. 

5. Many patients have found their “perfect” or at least their preferred mask. Why would they want to change from their existing mask such as a nasal mask and use a total face mask with all its potential drawbacks? 
One of the hardest and most difficult aspects of using a sleep apnea machine is to find your “perfect” mask. A mask that is properly fitting and comfortable will strongly enhance a person’s experience, acceptance and long-term use of the sleep apnea machine. Why change mask after spending in some cases, a lot of time and money working out the “perfect” mask for them? Details of my "perfect" mask being a nasal mask are on the blog post Stop CPAP Mask Problems and Issues.

6. The research study states that the reason the patient was able to use a total face mask is that “a total face mask allows equalization of pressure on both sides of the lacrimal system.” This is absolute NONSENSE! Take this statement from someone who regularly uses a sleep apnea machine, uses maximum pressure up to 17 cmH2O, has used a total face mask and had 2 eye tear duct dacryocystorhinostomy (DCR) operations, one on each eye. This is more than most if not 100% of all the sleep medical specialists!   

Why has the pressure not equalized as stated by the sleep medical researchers? The reason is that the pressure has not changed. For example, should I use CPAP fixed pressure of 9 cmH2O, then the pressure stays all night at 9 cmH2O! The pressure of 9 cmH2O does not change when air is coming out of the eye tear duct. It is the velocity or force of the air that has changed.


Force = Pressure x Area of opening of the tear duct Vs Area of the whole eye. 

To explain further the reason why, I use an everyday example. Go into the backyard and fill up a bucket with water using a hose. Put your finger over part of the end of the hose, what happens? The water comes out or shoots out faster and further. This is similar to the eye tear duct which is very narrow compared to the whole area of the eye. Whilst the air pressure is the same; the air is coming out faster and further from the eye tear duct due to the smaller area or opening of the tear duct. 

Now ask yourself the question, does the bucket fill up with water faster with your finger over the end of the hose when compared to not using your finger? The answer is NO! You need both pressure and flow or volume of water. That is, whilst the force of the water has increased; the volume of water has reduced.

https://www.physlink.com/education/askexperts/ae185.cfm

The reason the air does not come through the eye tear duct and out of the eye in the sleep medical researchers study is due to the reduced volume of air using the total face mask and that the mean pressure used in the study is low at 9 cmH2O. It is not due to the equalization of pressure using a total face mask. As mentioned, when I use a total face mask with pressure up to 17 cmH2O, air still comes through one of my eye tear ducts and out of the eye.  
The example of filling up a bucket with water is basic physics which the sleep medical specialists would have learnt at school. Refer to an article including video written by the Children’s Museum of Houston, USA.
https://www.cmhouston.org/classroom-curriculum/a-spray-spree
 
Some medical specialists will argue that water and air are completely different. Whilst the density may be drastically different, the principles applying to each are similar in that both water and air are fluids. This is most noticeable when a person uses humidification with their sleep apnea machine.  
The principle of filling up a bucket with water is critical to understanding how to stop CPAP air coming through the eye tear ducts and out of the eyes using a sleep apnea machine. In addition, a person can use any type of sleep apnea mask. It is a great example of the lack of understanding by the sleep medical specialists of how the sleep apnea machines and sleep apnea therapy truly work. As the sleep specialists are not educating themselves and their patients, it will be up to you to educate yourself!  

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. More details are on the blog post: 

What BiPAP Settings prevent Alzheimer's due to REM sleep breathing issues?


Further details on how to overcome the issue of air through the eye tear duct and coming out the eyes using any sleep apnea mask and how two Aha moments gave me the answer are on the following blog posts:

Air through Eye Tear Duct - Introduction 

How to Stop Eye Tear Duct Air Regurgitation? 

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)
Should you be having side effects and issues with your sleep apnea therapy; CHANGE what you are doing so that you can wake up feeling refreshed and energized each day. 
“Have courage. Be adventurous and Go for it! Overcome your fear.”
- Mrhelpful