Excerpt from Ophthalmology Times:
…Dr. Berdahl began to think of glaucoma not as a disease confined solely to the ocular system, but as a disease of pressure differences throughout the body. The body uniformly experiences these pressure increases during scuba diving; since pressure rises are not confined to one area the entire body negates the increase.
“We’ve previously thought of glaucoma as a pressure inside the eye, not a relative-pressure-to-something-else disease,” Dr. Berdahl said. He began exploring (retrospectively) the relationship between IOP and cerebrospinal fluid (CSF) pressure, and others have confirmed the initial hypothesis.