This article may have it exactly wrong. Those occasional spikes in eye pressure may be what normally induces drainage that results in lowered eye pressure. Without those spikes in pressure, the result would predictably be the unrelenting steady pressure that eventually results in optic nerve damage. The experiment to test this hypothesis would be trivial, e.g. by simply measuring eye pressure before and after eye rubbing. This article leaves me wondering whether the thinking of researchers is just as shallow as that of the writer of this article, or whether there is a an unwritten story here of even greater significance. I am looking into my own pre-glaucoma, so if you have anything to add to this discussion, then please post it so that I can see it. Thanks from Steve dot Richfield at gmail dot com.