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Nationwide incidence of blindness in South Korea: a 12-year study from 2002 to 2013

Authors
 Tyler Hyungtaek Rim  ;  Dong Wook Kim  ;  Eun Jee Chung  ;  Sung Soo Kim 
Citation
 Clinical and Experimental Ophthalmology, Vol.45(8) : 773-778, 2017 
Journal Title
 Clinical and Experimental Ophthalmology 
ISSN
 1442-6404 
Issue Date
2017
MeSH
Adolescent ; Adult ; Age Distribution ; Aged ; Aged, 80 and over ; Blindness/epidemiology* ; Blindness/physiopathology ; Blindness/rehabilitation Child ; Child, Preschool ; Disability Evaluation ; Female ; Follow-Up Studies ; Forecasting* ; Humans ; Incidence ; Infant ; Infant, Newborn ; Male ; Middle Aged ; Population Surveillance/methods* ; Prevalence ; Public Health* ; Registries* ; Republic of Korea/epidemiology ; Retrospective Studies ; Sex Distribution ; Socioeconomic Factors ; Visual Acuity* ; Visually Impaired Persons/statistics & numerical data* ; Young Adult
Keywords
blindness ; epidemiology ; incidence
Abstract
IMPORTANCE: Blindness is an important public health issue. BACKGROUND: The background of the study is to determine the incidence of blindness in South Korea. DESIGN: Nationwide population-based retrospective study. PARTICIPANTS: All individuals from South Korea (n = 47 516 098). METHODS: Patients confirmed with legal blindness based on the worse-seeing and better-seeing eyes between 1 January 2002 and 31 December 2013 were included. The Korean National Health Insurance Service (KNHIS) database was used. Using the World Health Organization definition, blindness was defined as best-corrected visual acuity in the worse-seeing and better-seeing eyes of <20/400. The mean incidence of blindness during the 12-year period was estimated. The population of South Korea was estimated using census data in 2005 and 2010. MAIN OUTCOME MEASURES: The total number of legal blindness cases in the KNHIS database. RESULTS: We identified 195 004 and 20 492 cases of newly developed legal blindness based on the worse-seeing and better-seeing eyes, respectively, and the mean incidences of blindness were 34.2 and 3.6 cases/100 000 person-years, respectively. The prevalence of blindness based on the worse-seeing and better-seeing eyes was 425.3 and 57.7 cases/100 000 persons, respectively. The incidence of blindness based on the worse-seeing eye was higher in men than in women overall. Additionally, the incidence increased with age and showed a decreasing trend from 2002 to 2013. CONCLUSIONS AND RELEVANCE: The prevalence of blindness showed an increasing trend from 2002 to 2013. The findings of our study will help in the assessment of the blindness-related socio-economic burden and in healthcare planning.
URI
http://ir.ymlib.yonsei.ac.kr/handle/22282913/161503
DOI
10.1111/ceo.12962
Appears in Collections:
1. Journal Papers (연구논문) > 1. College of Medicine (의과대학) > Dept. of Ophthalmology (안과학교실)
Yonsei Authors
김성수(Kim, Sung Soo) ; 임형택(Rim, Tyler Hyungtaek)
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Full Text
https://onlinelibrary.wiley.com/doi/abs/10.1111/ceo.12962
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