
In my experience, the Proview Eye Pressure Monitor (home tonometer) is not accurate. For me, it fails to corrrelate with professional tonometer measurements at all. This statement is based on my personal experience with the Proview. However, my experience is substantiated by the research. For example, see the article from the journal Ophthalmology titled "The Proview Phosphene Tonometer Fails to Measure Ocular Pressure Accurately in Clinical Practice."
The article concludes, "The Proview instrument and technique were reproducible. However, the Proview tonometer seems not to be reliable as an indicator of IOP. The sensitivity for detecting high IOP was low in this cohort, and the agreement with Goldmann applanation was poor for some individuals. This brings into question the underlying assumption that a force proportional to the IOP generates phosphenes"
"The sensitivity of the Proview technique to detect patients with high IOP (which we defined as a Goldmann pressure of >= 22 mmHg) is low; the Proview pressure identified only 18% (4/22) of these patients."
Ophthalmology 2004;111:1077-1085 © 2004 by the American Academy of Ophthalmology
The real problem is that the Proview can indicate your eye pressure is normal when in fact it could be severely elevated. The Proview can report readings of 15-18mmHg (normal) even when the actual IOP is as high as 30 or 35mmHg. The cutoff for normal is usually considered about 21mmHg -- and eye pressure of 30 or more is considered potentially dangerous, so relying on the Proview could indeed represent a potential danger to glaucoma patients.
http://freeradicalfederation.com/ProviewWarning (pdf download of article cited above)
http://fiteyes.com/blogs/dave/2007/01/14/How-To-Measure-Your-IOP-At-Home-And-Change-the-World-Too (discussion of various tonometers)Get more detail about
Proview Eye Pressure Monitor Kit - 1 kit.