title: Epidemiological survey of primary angle-closure glaucoma in Doumen.
abstract: OBJECTIVE
  To determine the prevalence of primary angle-closure glaucoma (PACG) in Doumen Countty, Guangdong province.
  
  
  METHODS
  Four villages from eight districts in doumen were selected by stratified, cluster and random sampling. Of a total of 1055 people aged 45 years or over, 932 (88.62%) were examined. The examination and diagnostic criterion were similar to those of shunyi survey.
  
  
  RESULTS
  The prevalence of PACG in subjects over 45 year of eye is 0.64%, in those over 50 years of age is 0.85% in Doumen, which is significantly lower than the corresponding figure of 1.99% in shunyi (P < 0.05).
  
  
  CONCLUSIONS
  This study identifies the prevalence of PACG in Doumen is lower than in Shunyi.
authors.affiliation: Zhongshan Ophthalmic Center, Sun Yat-sen University of Medical Sciences, Guangzhou, China.
authors.forename: Q
authors.initials: Q
authors.lastname: Yu
authors.forename: J
authors.initials: J
authors.lastname: Xu
authors.forename: S
authors.initials: S
authors.lastname: Zhu
authors.forename: Q
authors.initials: Q
authors.lastname: Liu
mesh_terms: D000368:Aged; D000867:Anterior Chamber / Q000473:pathology; D002681:China / Q000453:epidemiology; D005260:Female; D015812:Glaucoma, Angle-Closure / Q000453:epidemiology*; D006801:Humans; D007429:Intraocular Pressure; D008297:Male; D008403:Mass Screening; D008875:Middle Aged; D015995:Prevalence; D011897:Random Allocation