title: Prevalence of age-related macular degeneration in the United States.
abstract: OBJECTIVE
  To estimate the prevalence and distribution of age-related macular degeneration (AMD) in the United States by age, race/ethnicity, and gender.
  
  
  METHODS
  Summary prevalence estimates of drusen 125 microm or larger, neovascular AMD, and geographic atrophy were prepared separately for black and white persons in 5-year age intervals starting at 40 years. The estimated rates were based on a meta-analysis of recent population-based studies in the United States, Australia, and Europe. These rates were applied to 2000 US Census data and to projected US population figures for 2020 to estimate the number of the US population with drusen and AMD.
  
  
  RESULTS
  The overall prevalence of neovascular AMD and/or geographic atrophy in the US population 40 years and older is estimated to be 1.47% (95% confidence interval, 1.38%-1.55%), with 1.75 million citizens having AMD. The prevalence of AMD increased dramatically with age, with more than 15% of the white women older than 80 years having neovascular AMD and/or geographic atrophy. More than 7 million individuals had drusen measuring 125 microm or larger and were, therefore, at substantial risk of developing AMD. Owing to the rapidly aging population, the number of persons having AMD will increase by 50% to 2.95 million in 2020. Age-related macular degeneration was far more prevalent among white than among black persons.
  
  
  CONCLUSIONS
  Age-related macular degeneration affects more than 1.75 million individuals in the United States. Owing to the rapid aging of the US population, this number will increase to almost 3 million by 2020.
authors.affiliation: Wilmer Eye Institute, Wilmer 120, 600 N. Wolfe Street, Baltimore, MD 21287, USA. david.friedman@jhu.edu
authors.forename: David S
authors.initials: DS
authors.lastname: Friedman
authors.forename: Benita J
authors.initials: BJ
authors.lastname: O'Colmain
authors.forename: Beatriz
authors.initials: B
authors.lastname: Muñoz
authors.forename: Sandra C
authors.initials: SC
authors.lastname: Tomany
authors.forename: Cathy
authors.initials: C
authors.lastname: McCarty
authors.forename: Paulus T V M
authors.initials: PT
authors.lastname: de Jong
authors.forename: Barbara
authors.initials: B
authors.lastname: Nemesure
authors.forename: Paul
authors.initials: P
authors.lastname: Mitchell
authors.forename: John
authors.initials: J
authors.lastname: Kempen
mesh_terms: D000328:Adult; D017677:Age Distribution; D000368:Aged; D000369:Aged, 80 and over; D044383:Black People / Q000706:statistics & numerical data*; D005260:Female; D006801:Humans; D008268:Macular Degeneration / Q000145:classification / Q000208:ethnology*; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D017678:Sex Distribution; D014481:United States / Q000453:epidemiology; D044465:White People / Q000706:statistics & numerical data*; D001741:Black or African American