Original articlePrevalence and Risk Factors for Myopic Retinopathy in a Japanese Population: The Hisayama Study
Section snippets
Study Population
The Hisayama Study is an ongoing, long-term, cohort study on cardiovascular disease and its risk factors in Hisayama, a town adjoining Fukuoka City, a metropolitan area in southern Japan.13, 14 As a part of the study, we performed a cross-sectional eye examination among Hisayama residents aged ≥40 years in 2005. Among the total of 4439 residents in this age group, 1969 individuals consented to participate in the study. Of these, 1895 (96.2%) underwent the ophthalmic examination. After excluding
Results
Table 1 shows the comparison of characteristics of the study population by gender. Men were older, taller, and had longer axial lengths than women. The frequencies of diabetes, hypertension, smoking habits, and alcohol intake, and mean white blood cell count were higher for men than for women, whereas mean total cholesterol was higher for women. There was no difference in mean body mass index, mean SE refraction, or frequencies of history of cataract surgery between the genders.
The prevalence
Discussion
To our knowledge, this is the first population-based study to investigate the prevalence of and risk factors for myopic retinopathy in Japan. The findings showed that the overall prevalence of myopic retinopathy was 1.7%, and that older age, female gender, and longer axial length were independently associated with myopic retinopathy.
In a Japanese hospital-based study, Tokoro17 reported a prevalence of myopic retinopathy of 2.2% and estimated the general population prevalence to be approximately
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Manuscript no. 2011-1182.
Financial Disclosure(s): The authors have no proprietary or commercial interest in any of the materials discussed in this article.