title: Ocular pulse amplitude after panretinal photocoagulation in normotensive eyes with proliferative diabetic retinopathy.
abstract: OBJECTIVE
  To assess the effect of panretinal laser photocoagulation on ocular pulse amplitude (OPA) in normotensive eyes with proliferative diabetic retinopathy.
  
  
  METHODS
  Prospectively, we performed unilateral argon laser panretinal photocoagulation (PRP) in 30 patients with diabetes mellitus type II and previously untreated bilateral proliferative diabetic retinopathy. Before and 7 and 30 days after the treatment, OPA was measured using dynamic contour tonometer.
  
  
  RESULTS
  Compared with the untreated contralateral eyes, laser photocoagulation led to a reduction of OPA. Ocular pulse amplitude did not significantly differ in photocoagulated eyes 7 days after the treatment, but there was a significant difference in OPA 30 days after the treatment. The decrease in OPA values was 15% 7 days after PRP and 40% 30 days after PRP.
  
  
  CONCLUSIONS
  Ocular pulse amplitude reduction after PRP indirectly informs us about choriocapillary closure, already reported in previous studies.
authors.affiliation: University Eye Hospital, Belgrade - Serbia.|Medical Faculty, University of Belgrade, Belgrade - Serbia.
authors.forename: Marija M
authors.initials: MM
authors.lastname: Bozic
authors.affiliation: University Eye Hospital, Belgrade - Serbia.|Medical Faculty, University of Belgrade, Belgrade - Serbia.
authors.forename: Jelena B
authors.initials: JB
authors.lastname: Karadzic
authors.affiliation: University Eye Hospital, Belgrade - Serbia.|Medical Faculty, University of Belgrade, Belgrade - Serbia.
authors.forename: Igor M
authors.initials: IM
authors.lastname: Kovacevic
authors.affiliation: University Eye Hospital, Belgrade - Serbia.|Medical Faculty, University of Belgrade, Belgrade - Serbia.
authors.forename: Ivan S
authors.initials: IS
authors.lastname: Marjanovic
mesh_terms: D000328:Adult; D000368:Aged; D001794:Blood Pressure / Q000502:physiology; D002829:Choroid / Q000098:blood supply; D003924:Diabetes Mellitus, Type 2 / Q000150:complications; D003930:Diabetic Retinopathy / Q000503:physiopathology / Q000601:surgery*; D005260:Female; D006339:Heart Rate / Q000502:physiology; D006801:Humans; D017075:Laser Coagulation / Q000379:methods*; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D011673:Pulsatile Flow / Q000502:physiology; D012039:Regional Blood Flow / Q000502:physiology; D012160:Retina / Q000503:physiopathology; D014065:Tonometry, Ocular / Q000379:methods