Glaucoma is a disease of the central nervous system NOT the eye

According to new research, the early stages of glaucoma are not centralized in the eye or retina BUT the brain. Therefore the current emphasis on IOP tonometry may not be as relevant in the management of this disease as was presumed because the focus of intervention is on the brain itself which will lead to new treatments aimed towards specific parts of the brain rather than the eye!

http://www.sciencedaily.com/releases/2010/03/100301151919.htm