Glaucoma incidence in an unselected cohort of diabetic patients: is diabetes mellitus a risk factor for glaucoma?

  1. Lookup NU author(s)
  2. Jennifer Evans
  3. Dr Danny Ruta
Author(s)Evans JM; Ruta DA; Ellis JD; Baines PS; Leese G; MacDonald TM; Morris AD
Publication type Article
JournalBritish Journal of Ophthalmology
Year2000
Volume84
Issue11
Pages1218-1224
ISSN (print)0007-1161
ISSN (electronic)1468-2079
Full text for this publication is not currently held within this repository. Alternative links are provided below where available.
AIMS: To evaluate whether diabetes mellitus is a risk factor for the development of primary open angle glaucoma or ocular hypertension (OHT). METHODS: A historical cohort study of an unselected population comprising all residents of the Tayside region of Scotland was performed using record linkage techniques followed by case note review. Ascertainment of prevalent diabetes was achieved using the Diabetes Audit and Research in Tayside Study (DARTS) validated regional diabetes register. Glaucoma and treated OHT were defined by encashment of community prescriptions and the statutory surgical procedure coding database. RESULTS: The study population comprised 6631 diabetic subjects and 166 144 non-diabetic subjects aged >40 years without glaucoma or OHT at study entry. 65 patients with diabetes and 958 without diabetes were identified as new cases of glaucoma or treated OHT during the 24 month study period, yielding a standardised morbidity ratio of 127 (95% CI, 96-158). Case note review demonstrated non-differential misclassification of prevalent glaucoma and OHT as incident disease (diabetic cohort 20%, non-diabetic cohort 24%; p=0.56) primarily as a result of non-compliance in medically treated disease. Removing misclassified cases and adjusting for age yielded an incidence of primary open angle glaucoma in diabetes of 1.1/1000 patient years (95% CI, 0.89-1. 31) compared to 0.7/1000 patient years (95% CI, 0.54-0.86) in the non-diabetic cohort; RR 1.57 (95% CI, 0.99-2.48). CONCLUSIONS: This study failed to confirm an association between diabetes mellitus and primary open angle glaucoma and ocular hypertension. A non-significant increase in diagnosed and treated disease in the diabetic population was observed, but evidence was also found that detection bias contributes to this association.
PublisherBMJ Publishing Group Ltd
URLhttp://bjo.bmj.com/content/84/11/1218.full.pdf
NotesDARTS/MEMO collaboration. Diabetes Audit and Research in Tayside Study. Medicines Monitoring Unit.[see comment]
Actions    Link to this publication
Share