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We review the current literature regarding the risk factors for cataract and the association between cataract and systemic disease. Numerous epidemiologic studies have found that the risk factors for age-related cataract formation include age, sex, race and myopia. Modifiable risk factors include smoking, socioeconomic status and ultra-violet light exposure. Alcohol intake and nutritional status may play a role in cataract formation. Cataract has been associated with many systemic diseases mainly diabetes mellitus, hypertension, obesity, chronic kidney disease and autoimmune disease. Cataract is also a hallmark of many metabolic disorders and syndromes. These findings are important to help implement risk factor and lifestyle-modification strategies that can hopefully decrease the burden of global cataract blindness.
Ang et al. (Sun,) studied this question.
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