title: [Observation of the anterior ischemic optic neuropathy by color Doppler flow imaging].
abstract: OBJECTIVE
  To study the characteristics of color Doppler flow imaging (CDFI) in anterior optic neuropathy (AION).
  
  
  METHODS
  Forty eyes of 25 patients clinically diagnosed to have progressive AION were studied by using CDFI. The peak systolic velocity (PSV), end-diastolic velocity (EDV), time averaged maximum velocity (TAMV) and resistance index (RI) of the central retinal artery (CRA), nasal and temporal posterior ciliary arteries (PCAs) and ophthalmic artery (OA) were detected. The diameter of retrobulbar optic nerve (ON) was detected at the same time. Thirty-four volunteers were served as the control group.
  
  
  RESULTS
  In the comparison with the control group, there were significantly reduced PSV, EDV and TAMV in PCAs (P < 0.001) and CRA (P < 0.001) and markedly increased RI in PCAs, CRA and OA in AION group. The retrobulbar optic nerve edema was found in 32/40 eyes.
  
  
  CONCLUSIONS
  The characteristics of reduced velocity and increased resistance index in retrobulbar arteries of the AION are demonstrated. CDFI is helpful to the diagnosis of AION.
authors.affiliation: Department of Ophthalmology, General Hospital of the PLA, Beijing 100853.
authors.forename: X
authors.initials: X
authors.lastname: Li
authors.forename: J
authors.initials: J
authors.lastname: Wang
authors.forename: S
authors.initials: S
authors.lastname: He
authors.forename: Y
authors.initials: Y
authors.lastname: Hao
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001783:Blood Flow Velocity; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009880:Ophthalmic Artery / Q000000981:diagnostic imaging; D018917:Optic Neuropathy, Ischemic / Q000000981:diagnostic imaging*; D012161:Retinal Artery / Q000000981:diagnostic imaging; D018615:Ultrasonography, Doppler, Color; D014655:Vascular Resistance