IS DIABETES A RISK FACTOR FOR GLAUCOMA OR NOT?

One thing I found interesting in this month's article, New Calculator Predicts Glaucoma Risk in Review of Optometry is that the author states:

"Clinicians should note that diabetes is protective against conversion from ocular hypertension to glaucoma, say Dr. Semes and his colleague, Paul Schacknow, M.D., Ph.D., from Lake Worth, Fla. If patients are diabetics, their glaucoma risk goes down.

“This may be misleading because it contradicts other studies, and therefore may limit the interpretation of the results of the calculator,” Dr. Schacknow says"

Studies seem to point both ways. It kind of makes it a non-factor...for now until there are more conclusive studies.