title: Northern New Zealand Rhegmatogenous Retinal Detachment Study: epidemiology and risk factors.
abstract: BACKGROUND
  The incidence of retinal detachment in New Zealand is not currently documented in the literature. This study sought to determine the annual incidence of rhegmatogenous retinal detachment (RRD) and associated risk factors in northern New Zealand.
  
  
  METHODS
  Epidemiological and clinical data were collected for all patients presenting with a RRD in a 12-month interval in a confined geographical area of New Zealand.
  
  
  RESULTS
  One hundred and forty-one patients presented between May 1997 and April 1998 with a RRD. Five patients presented with bilateral RRD. The mean age at presentation was 53.9 years and the annual incidence for RRD was 11.8 cases per 100,000 people. RRD was more common in males than in females (1.3:1). Ocular trauma, high myopia and cataract extraction were found to be significant risk factors in the development of RRD.
  
  
  CONCLUSIONS
  The annual incidence of RRD in northern New Zealand is comparable to values reported for other parts of the world and, consistent with previous studies, the incidence of RRD was found to increase with age, and in association with trauma, high myopia and cataract surgery.
authors.affiliation: Department of Ophthalmology, University of Auckland, Auckland, New Zealand. philip@pjpolk.co.nz
authors.forename: Philip J
authors.initials: PJ
authors.lastname: Polkinghorne
authors.forename: Jennifer P
authors.initials: JP
authors.lastname: Craig
mesh_terms: D000293:Adolescent; D000328:Adult; D017677:Age Distribution; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D009520:New Zealand / Q000453:epidemiology; D012163:Retinal Detachment / Q000453:epidemiology*; D012307:Risk Factors; D017678:Sex Distribution