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Some glaucoma specialists are taking magnesium supplementation seriously

Submitted by dave on Thu, 04/15/2010 - 1:08pm

The effect of oral magnesium therapy on visual field and ocular blood flow in normotensive glaucoma

Note these conclusions! Also note that Josef FLAMMER, Professor and Head, Department of Ophthalmology, University Hospital Basel (Switzerland), recommends magnesium supplementation (so I am told).

Purpose. To evaluate the effect of oral magnesium therapy on ocular blood flow and visual field perimetry indices in patients with normotensive glaucoma (NTG).

Preview of the Icare ONE handheld tonometer for home eye pressure monitoring

Submitted by dave on Fri, 04/09/2010 - 11:44am

My evaluation Icare ONE tonometer arrived today. I will compare it to:

    * Icare TA01i
    * Reichert 7CR Tonometer
    * Pascal Dynamic Contour Tonometer
    * Ocular Response Analyzer
    * Reichert AT555 Tonometer
    * maybe another one or two tonometers...

Look for a full review in the near future on UPDATE: I have decided not to publish my review of the Icare ONE at this time. Please read Are handheld or portable tonometers appropriate for home eye pressure monitoring?

Let me offer an analogy. If I were reviewing golf clubs, I would not include a review of a baseball bat. A baseball bat is not appropriate for playing golf. During the process of evaluating the Icare ONE, I came to a broader conclusion about all handheld tonometer and their appropriateness for self-tonometry (home eye pressure monitoring). Therefore, I feel it is better to have that general discussion first. You can read my thoughts here: Are handheld or portable tonometers appropriate for home eye pressure monitoring?

There is a related discussion on the Icare ONE here: New iCare ONE Tonometer Designed for Home Eye Pressure Monitoring

For now, here are some pictures of my evaluation Icare ONE tonometer.

Just arriving via FedEx (below). Some tonometers it will be evaluated against are shown in the background.

Icare ONE home eye pressure monitoring tonometer


Cure for glaucoma which leads to blindness may be on its way: lymphatics found in eye

Submitted by dave on Wed, 04/07/2010 - 8:54am

Cure for glaucoma soon, says new research

October 6th, 2009 SindhToday
Toronto, Oct 6 (IANS) Cure for glaucoma which leads to blindness may be on its way.

Canadian researchers have discovered an unidentified form of circulation in the human eye which may provide important clues to glaucoma.

The human eye is considered to lack lymphatics – a circulation responsible for pumping fluid and waste out of tissues.

But now researchers at the Universityof Toronto and the local St Michael’s Hospital say the inability to clear that fluid from the eye is linked to glaucoma which currently affects over 66 million people worldwide.

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.

Eating eggplant does NOT reduce eye pressure in our tests

Submitted by dave on Tue, 03/23/2010 - 4:20pm

It has come to my attention that a number of people are reading the headline from our discussion about eggplant and intraocular pressure and coming to a conclusion without actually reading the article. That's not a good idea in this case.

Please read the article and the comments. Here's the link: Eating eggplant reduces eye pressure

Effect of Sleeping in a Head-Up Position on Intraocular Pressure in Patients with Glaucoma

Submitted by dave on Wed, 03/03/2010 - 2:28pm

I am reading this study now. I like the fact that they did investigate ocular perfusion pressure (OPP) while monitoring the intraocular pressure (IOP) during this study, and that they checked IOP in the sleeping position (rather than sitting the patient up). So, with a quick glance, the methodology looks acceptable to me.

Purpose: To determine whether a 30-degree head-up sleeping position decreases nocturnal intraocular pressure (IOP) compared with lying flat in patients with glaucoma.

Intraocular Pressure in a Spiritual Context

Submitted by dave on Wed, 02/24/2010 - 9:59am

Recently here on FitEyes, readers have asked about the relationship between intraocular pressure about meditation. That prompted me to write this post about some of the broader spiritual aspects of what I do as well as how I view intraocular pressure in my own life and in my work as a Serene Impulse teacher.

Kindness As A Tool for Managing Eye Pressure

Submitted by dave on Wed, 01/20/2010 - 1:26pm

Yesterday I saw some discussions that reminded me of the profound discovery I made several years ago in my own intraocular pressure data. I observed, time and time again, that simply disagreeing with another individual in an online forum would raise my intraocular pressure. (This effect does not require arguing -- simply disagreeing in a polite manner is often enough.) This is a universal phenomenon.

Panic attacks, adrenal exhaustion, eye pressure and consciousness

Submitted by dave on Sun, 01/17/2010 - 2:01pm

FitEyes post about the healing power of consciousnessLow blood pressure can be a problem for glaucoma patients because it results in insufficient blood supply to the optic nerve.

A lot of glaucoma patients suffer from anxiety, stress, panic attacks and other similar issues. Those issues lead to adrenal fatigue and adrenal exhaustion. And adrenal fatigue/exhaustion can lead to low blood pressure (hypotension).

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:

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.

Detective Work Required - Eye Pressure Going Up While On Relaxing Vacation

Submitted by dave on Sat, 12/26/2009 - 2:31pm

For many glaucoma patients, a vacation can present an opportunity to do some good thinking, maybe reflect on our direction in life or mentally solve some important questions that have been in the back of our mind but ignored because of our busy schedules.

Filed Under (tags):

Problem with emails

Submitted by dave on Thu, 11/19/2009 - 3:26pm

I have just learned that has exceeded our email sending limit. Our ability to send emails has been suspended for at least 24 hours.

I will have to make a decision about either upgrading our email services (at additional cost) or limiting the emails that we send out. In the mean time, I apologize for this inconvenience.

The fight over the future of food

Submitted by dave on Tue, 11/10/2009 - 4:41pm

This is an interesting article that continues a topic worthy of greater discussion.

NEW YORK/WASHINGTON/MILAN (Reuters) - At first glance, Giuseppe Oglio's farm near Milan looks like it's suffering from neglect. Weeds run rampant amid the rice fields and clover grows unchecked around his millet crop.

Filed Under (tags):

Future Step For Self-Tonometry Research with Brain Computer Interface

Submitted by dave on Tue, 11/10/2009 - 9:25am

I am working on plans to take my self-tonometry research to the next level by incorporating physiological monitoring with frequent self-tonometry. I have been focusing on using heart rate variability as a measure of the functioning of the autonomic nervous system (ANS). The goal of this is to correlate changes in intraocular pressure with changes in ANS state. My preliminary work looks promising. Tools to monitor ECG-accurate heart rate variability are affordable to people engaged in self-tonometry research.

Filed Under (tags):

Goldmann Applanation Tonometry Video

Submitted by dave on Thu, 10/15/2009 - 2:22pm

Dr. Robert Ritch say that while this is not a perfect video, "I don’t know of a better video on tonometry."

Dear all,
Please go to link below to see my uploaded video on 'APPLANATION TONOMETRY' on youtube
Dr. Manav Deep Singh

The specific limitations I see are:


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