title: Age dependence of choroidal blood flow.
abstract: OBJECTIVE
  To investigate the age dependence of choroidal blood flow.
  
  
  METHODS
  A cross-sectional study.
  
  
  METHODS
  Department of Clinical Pharmacology, Vienna University.
  
  
  METHODS
  A total of 130 healthy volunteers between the ages of 19 and 83 years.
  
  
  METHODS
  Fundus pulsation amplitude (FPA) with a recently developed laser interferometric method, mean arterial pressure (MAP) with an automated oscillometric device, intraocular pressure (IOP) with an applanation tonometer, and ocular perfusion pressure (OPP) as calculated from MAP and IOP.
  
  
  RESULTS
  There was a significant correlation of FPA with age r = -0.242 (P = .005). MAP, IOP, and OPP showed a significant positive correlation with age. Multiple regression analysis showed that FPA is associated with age but not with MAP, IOP, or OPP.
  
  
  CONCLUSIONS
  Choroidal blood flow is reduced in older subjects, which argues in favor of an increase in ocular vascular resistance with age. This may be a risk factor in the development of common ocular diseases such as age-related macular degeneration or glaucoma.
authors.affiliation: Department of Clinical Pharmacology, Vienna University, Austria.
authors.forename: S
authors.initials: S
authors.lastname: Dallinger
authors.forename: O
authors.initials: O
authors.lastname: Findl
authors.forename: K
authors.initials: K
authors.lastname: Strenn
authors.forename: H G
authors.initials: HG
authors.lastname: Eichler
authors.forename: M
authors.initials: M
authors.lastname: Wolzt
authors.forename: L
authors.initials: L
authors.lastname: Schmetterer
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000375:Aging / Q000502:physiology*; D001794:Blood Pressure / Q000502:physiology; D002829:Choroid / Q000098:blood supply*; D003430:Cross-Sectional Studies; D005260:Female; D015577:Geriatric Assessment; D006801:Humans; D007429:Intraocular Pressure / Q000502:physiology; D008297:Male; D008875:Middle Aged; D011673:Pulsatile Flow / Q000502:physiology; D012016:Reference Values; D012039:Regional Blood Flow / Q000502:physiology