Cholesterol Drugs Lower
Glaucoma Risk
posted September 20, 2004
Researchers found a 40 percent
decrease in glaucoma among long-term statin users.
Statins, a class of medications widely used for lowering cholesterol, may not
only help reduce the risk of cardiovascular disease, but may also help prevent
the most common form of glaucoma, said Duke University Eye Centers researchers.
Duke ophthalmologists Paul Lee, M.D., and David Epstein, M.D., Duke chairman of
ophthalmology, collaborated with researchers from the University of Alabama at
Birmingham on the recent study. Using patient databases at the Veterans Affairs
Medical Center in Birmingham, they were able to conduct a matched case-control
study.
"The study results indicate that the people who were on a longer duration of
statins – 23 months or more – were the ones who had a clear protective
association against the development of glaucoma," Lee continued. "So there
appears to be a duration effect relative to the statins and glaucoma
development."
Lee said that while earlier research had shown the effect of statins on the
development of another common vision problem, age-related macular degeneration
(AMD), the genesis for the glaucoma study was actually in some of Epstein's
earlier work.
"Years ago, he thought that the mechanism of action of statins might be
effective against glaucoma, from a couple of different perspectives," Lee said.
"The first is that statins enhance the outflow of fluid from inside the eye.
Patients with open-angle glaucoma, the most common form of the glaucoma, have
impaired outflow. So statins help to unclog that pathway.
"Another important mechanism is the enhancement of vascular flow, since the
statins may be able to inhibit obstructions," Lee continued. "So there are a
couple of good reasons to suspect that statins might actually be protective for
patients against developing glaucoma, or perhaps in the future against the
worsening of glaucoma if someone has already developed it."
Lee cautioned that while the study showed a clear association between statin use
and development of glaucoma in a patient database, much more research is needed
before prescribing statins for glaucoma prevention.
Source: Diabetes In Control.com:
Archives of Ophthalmology, June 14, 2004.
September 2004
News Article Index