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Abstract #10337 Published in IGR 6-1
Intraocular pressure asymmetry and undiagnosed open-angle glaucoma in an older population
Lee AJ; Rochtchina E; Mitchell PAmerican Journal of Ophthalmology 2004; 137: 380-382
PURPOSE: To quantify prevalence of asymmetric intraocular pressure (IOP) and assess associations with undiagnosed open-angle glaucoma. DESIGN: Population-based cross-sectional study. METHODS: Participants underwent applanation tonometry. IOP asymmetry was defined for differences ≥ 3 mmHg; open-angle glaucoma was diagnosed if glaucomatous optic disc and field changes were congruous. Analyses excluded subjects using glaucoma medication, known glaucoma, pseudoexfoliation, and cataract surgery. RESULTS: IOP asymmetry was present in 5.1% of subjects and was greater for patients older than 70 years (6.2%). Of subjects with maximum IOP > 21 mmHg, IOP asymmetry was present in 41.1%. Undiagnosed open-angle glaucoma was more frequent in subjects with (4.8%) than without (1.2%) IOP asymmetry. This relationship remained significant for maximum IOP ≤ 21 mmHg. CONCLUSIONS: IOP asymmetry may be a useful sign of undiagnosed glaucoma in subjects without elevated IOP.
Dr. A.J. Lee, Department of Ophthalmology, University of Sydney, Sydney, Australia
Classification:
6.1 Intraocular pressure measurement; factors affecting IOP (Part of: 6 Clinical examination methods)
