title: The geographic distribution of eye care providers in the United States: Implications for a national strategy to improve vision health.
abstract: OBJECTIVE
  To describe the patterns of local eye care provider availability in the US.
  
  
  METHODS
  Data from 2011 on the number of ophthalmologists and optometrists in each of the 3143 counties in the US were drawn from the Area Health Resources File. Population-weighted quartiles of the county-level number of ophthalmologists per capita and the county-level number of optometrists per capita were defined. Descriptive statistics were calculated and a cross tabulation of quartiles of ophthalmologist availability and quartiles of optometrist availability was conducted for all the counties in the US and for the set of counties in each region of the US.
  
  
  RESULTS
  24.0% of US counties had no ophthalmologists or optometrists. 60.7% of counties in the US were in one of the lower two quartiles of both ophthalmologist availability and optometrist availability, and 24.1% of counties were in one of the lower two quartiles of ophthalmologist availability but in one of the upper two quartiles of optometrist availability.
  
  
  CONCLUSIONS
  Public health interventions that are effective in a context of limited local eye care provider availability or that are able to leverage optometrist availability effectively in areas with limited ophthalmologist availability could be of widespread use in the US.
authors.affiliation: School of Public Affairs, Baruch College - City University of New York, 17 Lexington Avenue, Box D-901, New York, NY 10010, United States. Electronic address: diane.gibson@baruch.cuny.edu.
authors.forename: Diane M
authors.initials: DM
authors.lastname: Gibson
mesh_terms: D006297:Health Services Accessibility / Q000706:statistics & numerical data; D006801:Humans; D009885:Ophthalmology / Q000706:statistics & numerical data*; D009907:Optometry / Q000706:statistics & numerical data*; D011153:Population; D011634:Public Health; D014481:United States / Q000453:epidemiology; D014786:Vision Disorders / Q000517:prevention & control*
keywords: Ophthalmology; Optometry; Public health; United States; Vision