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Satoshi Arakawa, Miho Yasuda, Masaharu Nagata, Toshiharu Ninomiya, Yoichiro Hirakawa, Yasufumi Doi, Yutaka Kiyohara, Tatsuro Ishibashi; Nine-Year Incidence and Risk Factors for Retinal Vein Occlusion in a General Japanese Population: The Hisayama Study. Invest. Ophthalmol. Vis. Sci. 2011;52(8):5905-5909. doi: 10.1167/iovs.11-7775.
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To estimate the long-term cumulative incidence and risk factors for retinal vein occlusion (RVO) in a population-based cohort study of Japanese.
In 1998, a total of 1775 individuals aged 40 years or older underwent a baseline eye examination. Of those, 1369 subjects (77.1%) took part in the follow-up eye examination in 2007 and were enrolled in the present study. Each participant underwent a comprehensive examination. The diagnosis of RVO, including branch (BRVO) and central RVO (CRVO), was determined by grading color fundus photographs. Logistic regression analysis was performed to determine risk factors for RVO.
The 9-year cumulative incidence of RVO was 3.0% (2.7% for BRVO and 0.3% for CRVO). The age-specific cumulative incidence of RVO significantly increased with age (P for trend = 0.03). After adjusting for age and sex, higher diastolic blood pressure and chronic kidney disease (CKD) were significantly associated with RVO. In multivariate analysis, higher diastolic blood pressure (per 10 mm Hg) (odds ratio [OR], 1.51; 95% confidence interval [CI], 1.14 to 2.01) and CKD (OR, 2.23; 95% CI, 1.02 to 4.89) remained independently significant risk factors for RVO. In stratified analysis, the risk of RVO was higher in subjects with CKD than that in subjects without CKD in both the nonhypertension and the hypertension groups.
These findings suggest that the incidence of RVO is higher in Japanese than that in other Asians and Caucasians, and that higher blood pressure and CKD are independent risk factors for RVO in the Japanese.
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