Abstract
PurposeTo explore the relationship of the metabolic syndrome (MetS) and its components with age-related cataract in a representative Korean population.MethodsWe analyzed the data from the Korea National Health and Nutrition Examination Surveys (2008–2010). A total of 11,076 adults (4,811 men and 6,265 women) aged 40 and over who completed ophthalmologic examination were evaluated. Cataract was defined as the presence of cortical, nuclear, anterior (sub)capsular or posterior subcapsular cataract, from slit-lamp examination or previous cataract surgery. MetS was defined according to the Joint Interim Statement proposed in 2009 from the International Diabetes Federation and the American Heart Association/National Heart, Lung, and Blood Institute.ResultsThe prevalence of cataract and MetS in this population was 39.4% (37.1% for men and 41.6% for women) and 38.5% (37.6% for men and 39.4% for women), respectively. Cataract prevalence tended to increase with the number of MetS components in both genders (both P< 0.001). After being controlled for confounders, however, MetS was significantly associated with cataract only in women (adjusted odds ratio (aOR), 1.24; 95% confidence interval (CI), 1.02–1.50]. Reduced HDL cholesterol, elevated fasting glucose, and elevated triglycerides were also significantly associated with cataract in women (aOR, 95% CI; 1.27 (1.07–1.50), 1.23 (1.01–1.50), and 1.26 (1.04–1.52), respectively). In the subgroup analysis for cataract subtype, MetS and reduced HDL cholesterol were significantly associated with nuclear cataract in women (aOR, 95% CI; 1.25 (1.07–1.55) and 1.25 (1.03–1.52), respectively). However, such associations were not found in men.ConclusionsOur results suggest that MetS and its components appear to be associated with age-related cataract only among Korean women, especially in nuclear cataract.
Highlights
Cataract is the most common age-related eye disease and a leading cause of blindness and poor vision
Subjects with metabolic syndrome (MetS) were more likely to be older in both genders
Occupation of farmer or fisher and regular exercise were lower, whereas heavy drinker was higher in men with MetS
Summary
Cataract is the most common age-related eye disease and a leading cause of blindness and poor vision. The risk factors of cataract are aging, smoking, ultraviolet radiation exposure, and genetic factors [2,3], whereas the epidemiological evidence is still controversial for antioxidants, alcohol consumption, and supplement use [3,4,5,6]. Some epidemiological studies have shown positive associations between the risk of cataract and various metabolic abnormalities. Diabetes and hyperglycemia have long been recognized as risk factors for cataract in several studies [7,8,9,10]. Obesity or central obesity [11,12,13,14,15], and serum lipid levels [15,16,17] have been found to increase the risk of cataract, whereas the relationship between cataract with systolic and diastolic blood pressure is controversial [15,18,19]
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