title: Investigation of the effect of exhaust particles on ocular blood flow in highway toll collectors using color Doppler ultrasonography.
abstract: OBJECTIVE
  To investigate the effect of exhaust particles on orbital blood flow velocity of the ophthalmic artery, central retinal artery, and posterior ciliary artery by color Doppler ultrasonography in highway toll collectors.
  
  
  METHODS
  Color Doppler imaging was used to measure the peak-systolic and end-diastolic flow velocities and resistivity indices of the ophthalmic artery, central retinal artery, and posterior ciliary artery in 20 toll collectors and 20 controls.
  
  
  RESULTS
  Both the peak-systolic and the end-diastolic flow velocities were decreased in the ophthalmic artery, central retinal artery, and posterior ciliary artery, and the resistivity index was increased in the central retinal artery in toll collectors when compared with control groups. Results were considered statistically significant if P<0.05.
  
  
  CONCLUSIONS
  It was determined that the effect of exhaust particles reduced ocular blood flow velocity in toll collectors as measured by color duplex Doppler ultrasonography.
authors.affiliation: Department of Radiology, Duzce Medical School, Duzce University, Duzce, Turkey. besirerdogmus@yahoo.com
authors.forename: B
authors.initials: B
authors.lastname: Erdogmus
authors.forename: B
authors.initials: B
authors.lastname: Yazici
authors.forename: H I
authors.initials: HI
authors.lastname: Onder
authors.forename: C
authors.initials: C
authors.lastname: Bilgin
authors.forename: A
authors.initials: A
authors.lastname: Tugay
authors.forename: R
authors.initials: R
authors.lastname: Buyukkaya
mesh_terms: D000328:Adult; D001783:Blood Flow Velocity; D016022:Case-Control Studies; D019842:Ciliary Arteries / Q000000981:diagnostic imaging* / Q000503:physiopathology; D003971:Diastole; D006801:Humans; D008297:Male; D008875:Middle Aged; D016273:Occupational Exposure / Q000009:adverse effects*; D009880:Ophthalmic Artery / Q000000981:diagnostic imaging* / Q000503:physiopathology; D012161:Retinal Artery / Q000000981:diagnostic imaging* / Q000503:physiopathology; D013599:Systole; D018615:Ultrasonography, Doppler, Color; D001335:Vehicle Emissions
chemical_list: D001335:Vehicle Emissions