posture

Effect of Sleeping Posture on Intraocular Pressure

Submitted by dave on Sun, 04/04/2010 - 1:55pm

A research study presented as a "poster" at ARVO 2010 indicated that the position of one's head (and body) during sleep can have an effect on intraocular pressure. For example, your eye pressure may be lower if you sleep on your back compared to sleeping on your side. (Furthermore, in my own experience, sleeping on your stomach may be the worst for IOP.)

Not discussed in this particular study was any difference in intraocular pressure between eyes. There is some evidence that if you sleep on your left side, intraocular pressure in the left eye could be higher.

Sleeping position alters intraocular pressure

Submitted by dave on Wed, 12/30/2009 - 5:45pm

How we sleep can raise or lower IOP

Patients with glaucoma often ask what they can do to favorably impact their disease. These patients are eager to engage in beneficial activities and to avoid detrimental activities to save their optic nerve from glaucoma. Unfortunately, most of glaucoma’s known risk factors are not modifiable—such as age, race, and family history. In glaucoma management, there is little credible data supporting any role of nutritional supplements, avoidance of certain exposures such as caffeine or smoking, or alternative interventions such as acupuncture. Doctors’ standard answer is usually to encourage patients to continue using their medications as prescribed and to keep their follow-up appointments faithfully.
Some new research presented at the May 2009 annual meeting of the Association for Research in Vision and Ophthalmology, Ft. Lauderdale, Fla., suggests that there may be a new modifiable risk factor within the patient’s ability to control: sleeping position.

Read more: http://www.eyeworld.org/article-sleeping-position-alters-intraocular-pre...

Caveat: this article ignores ocular perfusion pressure. It is quite possible that the conclusions discussed in this article are incorrect. Sleeping with the head elevated may reduce IOP but it may also reduce blood flow to the optic nerve (and brain) and thereby reduce ocular perfusion pressure. It is quite possible that sleeping with the head elevated may do a glaucoma patient more harm than good. But read the article for one perspective.

Re: optic nerve death

Submitted by dave on Mon, 05/26/2008 - 1:26pm

  andrea:


When I have asthma attacks the ER admits me if [my oximetry readings] dip below 85 at all. I do go under 90% which could be one of times when the hemoglobin is unable to furnish plenty of oxygen. Maybe better management of my asthma would help.

 

I have taken an interest in monitoring oximetry while doing other IOP research, including while doing pranayama, Serene Impulse and many of the other techniques I'm testing. I don't have anything extremely interesting to report yet, however. UPDATE: see Eye Pressure Miracle.

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