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Risk factors for open-angle glaucoma in a Japanese population: the Tajimi Study

Yasuyuki Suzuki¹, Aiko Iwase, Makoto Araie

¹Department of Ophthalmology, Teikyo University School of Medicine, Tokyo, Japan.

|July 11, 2006

Abstract

Purpose:

To identify the risk factors associated with primary open-angle glaucoma (POAG) in the Tajimi Study.

Design:

Population-based cross-sectional epidemiologic study.

Participants:

One hundred nineteen POAG patients and 2755 controls.

Methods:

Univariate and multivariate comparison of ocular factors and systemic factors between POAG patients and controls.

Main Outcome Measures:

Difference in factors between POAG patients and controls, factors associated with POAG patients, and their odds ratio (OR).

Results:

Intraocular pressure (IOP), age, myopia, and history of hypertension differed between POAG patients and controls in univariate analyses. Multivariate analysis with logistic regression with stepwise selection of variables demonstrated that higher IOP (OR, 1.12 [95% confidence interval (CI), 1.04-1.21]), myopia (ORs, 1.85 [95% CI, 1.03-3.31] for low myopia and 2.60 [95% CI, 1.56-4.35] for moderate to high myopia), and older age (OR, 1.06 [95% CI, 1.04-1.08]) were associated with an increased risk of having POAG.

Conclusions:

Although the majority (92%) of POAG patients diagnosed in the Tajimi Study had IOP within the normal range, IOP was still identified as a significant risk factor for POAG. Together with IOP, myopia and age were significant risk factors for having POAG.

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