Research overview
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ImportanceThis study provides a nationwide, population-based data on the incidence of benign essential blepharospasm in Asian adults.BackgroundTo describe the incidence, patient demographics, and risk factors associated with benign essential blepharospasm.DesignPopulation-based retrospective study.Participants and samplesA total of 1325 patients with benign essential blepharospasm were identified.MethodsPatients with diagnosis of blepharopsasm between January 2000 and December 2013 were sampled using the Longitudinal Health Insurance Database 2000. Secondary blepharospasm that may be related to neurological, trauma, and ocular surface disease were excluded.Main outcome measuredMultivariate conditional logistic regression was used to estimate the odds ratios for potential risk factors of benign essential blepharospasm.ResultsThe mean annual incidence was 0.10‰ (0.07‰ for males, and 0.12‰ for females). The peak incidence was in the 50 to 59-year-old age group (0.19‰). People living in urban regions have more risk of developing blepharospasm comparing to people living in less urban regions (p Conclusions and relevanceHigher level of urbanization, white-collar work, sleep disorders, mental health diseases, dry eye-related diseases, Parkinsonism, and rosacea are possible risk factors for benign essential blepharospasm.
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