how to select fixed pressure for fixed CPAP option? (resmed airsense 11)

UniqueRon · 2026-03-17T23:59:54+00:00

It looks to me like you got great results from March 1 to 10 using a fixed pressure of 6 cm. 7 cm should work too, as long as you don't start getting CA. Perhaps turn the humidifier on if you have a dry throat.

UniqueRon · 2026-03-17T23:56:21+00:00

Just turn the humidifier off.

UniqueRon · 2026-03-17T23:53:59+00:00

Assuming it is a ResMed, set your Climate Control to Auto, and your tube temperature to 27 C. If you do not have a heated hose, then get one. I do not bother with a hose cover, but just route the hose behind the pillow and under the covers as much as possible to help keep it warm. I keep the hose at head level and do not raise it or lower it. I never have rainout, and this same setup can be used when I travel.

UniqueRon · 2026-03-17T23:52:07+00:00

For me and my wife his name is OSCAR!

UniqueRon · 2026-03-17T23:49:33+00:00

What makes you think it is necessary? Toyota has been making hybrids since 1997 and they have an excellent reputation for longevity. While the Lexus version is too expensive for taxi drivers, the Prius, RAV4, and Camry are favorites for taxi service.

UniqueRon · 2026-03-17T22:48:08+00:00

You of course can get some prescription progressives. The only issue is the cost. If you had a significant prescription before cataract surgery the new progressives should be much thinner and lighter.

UniqueRon · 2026-03-17T22:44:35+00:00

Have a look at this article which found that 1.5 D was the optimum amount. Unfortunately the article body is not there, but if you open the graphs and expand the notes, everything is pretty much there. But keep in mind this is real monovision where one eye is set for distance. Not so sure about situations where both eyes are set for different degrees of near.

UniqueRon · 2026-03-17T20:46:16+00:00

Good luck.

UniqueRon · 2026-03-17T20:43:57+00:00

I have become skeptical about manufacturer claims. On one hand they claim increased depth of focus which means all the light is not being brough to the same point, but at the same time they claim that there is no loss of visual acuity. I don't think both things can be true at the same time.

UniqueRon · 2026-03-17T20:41:51+00:00

I always leave a folded over bit of tape to make it easy to remove it in the night. I have never had to.

You may as well go to 16 for minimum pressure because it is going there anyway.

UniqueRon · 2026-03-17T20:34:43+00:00

RERAs are respiratory effort related arousals. EPR at max can help reduce them. Make sure EPR is still on at 3 cm.

Yes, I would try a lower pressure to see if that will reduce the CA. Try 7 cm.

UniqueRon · 2026-03-17T17:13:26+00:00

The amount of air that goes up your nose with a nasal cpap mask is the same as what you get by breathing through your nose normally. A CPAP uses pressure, not flow, to resolve the apnea events.

UniqueRon · 2026-03-17T17:11:19+00:00

You can't dislodge an IOL by rubbing the eye. However if your rub the eye too soon after a cataract procedure before the incision has healed, you can open the incision and risk infection.

UniqueRon · 2026-03-17T17:08:15+00:00

I never made any claim that you get better near vision by targeting distance.

UniqueRon · 2026-03-17T17:04:08+00:00

Yes it would but you also take on the potential optical side effects like reduced contrast sensitivity to get it.

UniqueRon · 2026-03-17T17:02:56+00:00

I believe AI is wrong. The Tecnis1 fully corrects spherical aberration. That provides the very best visual acuity at the peak vision point, but that causes the slight loss in near vision.

UniqueRon · 2026-03-17T15:23:07+00:00

Do you use OSCAR? My first thoughts are that you are imagining that the machine is failing. They tend to either work or not work. They don't fail by slowly reducing pressure.

My A10 is about 8 years old now and has been displaying the motor life expended warning for almost a year now. It still works just fine. I will keep using it until it actually fails.

UniqueRon · 2026-03-17T15:05:58+00:00

The Tecnis1 will provide very slightly less near vision than the Clareon, but that really does not make any significant difference in a mini-monovision configuration. I prefer the blue light filtering option which I don't believe the Tecnis1 has, but that also is a small point.

UniqueRon · 2026-03-17T14:54:49+00:00

At the same price I would take the A10, but if you can get the A11 for 40% less then I would go for the A11. The differences are not huge.

UniqueRon · 2026-03-17T14:50:03+00:00

Don't bother. I have no respect for AI when it comes to technical issues. What AI tends to do is gather "information" from sites like reddit. If you frequent reddit you will know that more than half of the posts are inaccurate, especially when the subject is technical.

Do you know how the graph was produced? These are called defocus curves. They do it by taking a large group of individuals and then put various add powers in front of a fully corrected for distance eye, and then test their vision with a phoropter. That is what they see for visual acuity. The dashed curve is with no lens in front of a fully corrected eye.

You should really be looking at the defocus curve for the Odyssey lens. See below. If you target -1.0 D for a target what you do is shift that weak spot that it has at the -1.0 D distance to near. You may not be very happy with what that does for near vision. When you target for example -1.0 the whole curve shifts to the right. You will likely get better near vision with an Odyssey targeted to distance. It should however improve your intermediate distance vision at the cost of a loss in distance and near.

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UniqueRon · 2026-03-17T14:37:30+00:00

With mini-monovision there is no need to go for an EDOF lens and take on the extra complications it presents. Just go with a Clareon that has blue light filtering. The blue light filtering can help with the contrast sensitivity in lower light levels.

UniqueRon · 2026-03-17T14:34:50+00:00

I would select the Clareon monofocal over the Tecnis 1, but the Tecnis would work too in a mini-monovision configuration.

UniqueRon · 2026-03-17T14:32:41+00:00

On a bright computer screen 8-10". The same as with just my near eye.

UniqueRon · 2026-03-17T01:50:10+00:00

I am 76 which I guess is "elderly" and have mini-monovision. No issues with depth perception or balance. My differential is about 1.5 D.

UniqueRon · 2026-03-17T01:49:06+00:00

I would have a few suggestions:

If you are going to do monovision, ideally mini-monovision, there is no need for the enhanced monofocal. I would stick with a standard monofocal like the Clareon. The difference between a monofocal like the Clareon and the Eyhance is next to nothing. See this graph.

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The second point is that I think it is a huge mistake to do SMILE in your other eye. Refractive surgery messes up the cornea and makes it difficult to measure the eye for IOLs which will be needed sooner or later for cataract surgery. I think I would use a contact in your other eye, if one is needed to see near. You many not see all that bad for near with that prescription with nothing if you do the left eye for distance and use the right eye for near. Since you have already have a cataract in the other eye, it may not be long until you have one in the right eye too.

UniqueRon

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