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In this editorial the author comments on a paper by Ellis which reports on the incidence of newly diagnosed glaucoma and ocular hypertension among diabetics and non-diabetics. There is clearly a distinction made between incidence and prevalence. The study of Ellis relied on the detection of new glaucoma prescriptions and glaucoma surgical procedures among a large population of diabetics. There is a serious chance for detection bias. This was not the case in the Blue Mountain Study and in the Baltimore Eye study. In de first study the authors concluded that there was a real association between glaucoma and diabetes however in the second study this was not confirmed. In the Ellis study the authors acknowledge that detection bias probably contributed to the observed increased risk among diabetics and conclude that an association is not supported. So the question whether diabetes is a significant risk factor remains open and controversial. If an association exists at all it is certainly not a strong one.
S. Lin, Department of Ophthalmology, Beckman Vision Center, University of California, 400 Parnassus Avenue, San Francisco, CA 94143-0344 United States
9.2.2 Other risk factors for glaucoma (Part of: 9 Clinical forms of glaucomas > 9.2 Primary open angle glaucomas)
9.4.15 Glaucoma in relation to systemic disease (Part of: 9 Clinical forms of glaucomas > 9.4 Glaucomas associated with other ocular and systemic disorders)