title: Evaluation of ocular pulse amplitude in non-arteritic anterior ischaemic optic neuropathy.
abstract: BACKGROUND
  To evaluate the ocular pulse amplitude (OPA) in patients with chronic non-arteritic anterior ischaemic optic neuropathy (NAION).
  
  
  METHODS
  This cross-sectional study comprised a study group of 30 eyes from 30 patients with NAION and a control group of 31 eyes from 31 age and gender-matched healthy subjects. Bilateral OPA was measured with dynamic contour tonometry (DCT) and was compared between the study and control groups.
  
  
  RESULTS
  No statistically significant difference was found between the study and control groups in terms of hypertension, diabetes mellitus, ischaemic heart disease and hyperlipidemia. The mean intraocular pressure (IOP) measured with Goldmann Applanation Tonometry and DCT in the study and control groups was not statistically different (p1= 0.094, p2= 0.240). The mean OPA in the study group and the control group were 2.01 ± 0.69 mmHg and 1.97 ± 0.68 mmHg (p = 0.839).
  
  
  CONCLUSIONS
  No significant difference was determined in the OPA levels of eyes with NAION at the chronic stage and eyes in the control group.
authors.affiliation: Bozyaka Training and Research Hospital, Department of Ophthalmology, Izmir, Turkey. durgul2029@hotmail.com.|, Ilica Mah Prof Dr Turkan Saylan Cad No:41/15, 35320, Narlidere, Izmir, Turkey. durgul2029@hotmail.com.
authors.forename: Durgul
authors.initials: D
authors.lastname: Acan
authors.affiliation: Bozyaka Training and Research Hospital, Department of Ophthalmology, Izmir, Turkey.
authors.forename: Omer
authors.initials: O
authors.lastname: Karti
authors.affiliation: Bozyaka Training and Research Hospital, Department of Ophthalmology, Izmir, Turkey.
authors.forename: Tuncay
authors.initials: T
authors.lastname: Kusbeci
mesh_terms: D002908:Chronic Disease; D002924:Ciliary Body / Q000098:blood supply*; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D007429:Intraocular Pressure / Q000502:physiology*; D008297:Male; D008875:Middle Aged; D009900:Optic Nerve / Q000098:blood supply*; D018917:Optic Neuropathy, Ischemic / Q000175:diagnosis / Q000503:physiopathology*; D011446:Prospective Studies; D012039:Regional Blood Flow / Q000502:physiology*; D014065:Tonometry, Ocular
keywords: Dynamic contour tonometry; Intraocular pressure; Ocular blood flow; Optic nerve; Short posterior ciliary arteries