title: ASSOCIATIONS BETWEEN MACULAR EDEMA AND CIRCULATORY STATUS IN EYES WITH RETINAL VEIN OCCLUSION: An Adaptive Optics Scanning Laser Ophthalmoscopy Study.
abstract: OBJECTIVE
  To investigate associations between parafoveal microcirculatory status and foveal pathomorphology in eyes with macular edema (ME) secondary to retinal vein occlusion (RVO).
  
  
  METHODS
  Ten consecutive patients (10 eyes) with acute retinal vein occlusion were enrolled, 9 eyes of which received intravitreal ranibizumab (IVR) injections. Foveal morphologic changes were examined via optical coherence tomography (OCT), and parafoveal circulatory status was assessed via adaptive optics scanning laser ophthalmoscopy (AO-SLO).
  
  
  RESULTS
  The mean parafoveal aggregated erythrocyte velocity (AEV) measured by adaptive optics scanning laser ophthalmoscopy in eyes with retinal vein occlusion was 0.99 ± 0.43 mm/second at baseline, which was significantly lower than that of age-matched healthy subjects (1.41 ± 0.28 mm/second, P = 0.042). The longitudinal adaptive optics scanning laser ophthalmoscopy examinations of each patient showed that parafoveal AEV was strongly inversely correlated with optical coherence tomography-measured central foveal thickness (CFT) over the entire observation period. Using parafoveal AEV and central foveal thickness measurements obtained at the first and second examinations, we investigated associations between differences in parafoveal AEV and central foveal thickness, which were significantly and highly correlated (r = -0.84, P = 0.002).
  
  
  CONCLUSIONS
  Using adaptive optics scanning laser ophthalmoscopy in eyes with retinal vein occlusion macular edema, we could quantitatively evaluate the parafoveal AEV. A reduction or an increase in parafoveal AEV may be a clinical marker for the resolution or development/progression of macular edema respectively.
authors.affiliation: *Department of Ophthalmology and Visual Sciences, Kyoto University Graduate School of Medicine, Kyoto, Japan; and †Department of Ophthalmology, Kagawa University Faculty of Medicine, Kagawa, Japan.
authors.forename: Yuto
authors.initials: Y
authors.lastname: Iida
authors.forename: Yuki
authors.initials: Y
authors.lastname: Muraoka
authors.forename: Akihito
authors.initials: A
authors.lastname: Uji
authors.forename: Sotaro
authors.initials: S
authors.lastname: Ooto
authors.forename: Tomoaki
authors.initials: T
authors.lastname: Murakami
authors.forename: Kiyoshi
authors.initials: K
authors.lastname: Suzuma
authors.forename: Akitaka
authors.initials: A
authors.lastname: Tsujikawa
authors.forename: Shigeta
authors.initials: S
authors.lastname: Arichika
authors.forename: Ayako
authors.initials: A
authors.lastname: Takahashi
authors.forename: Yuko
authors.initials: Y
authors.lastname: Miwa
authors.forename: Nagahisa
authors.initials: N
authors.lastname: Yoshimura
mesh_terms: D001783:Blood Flow Velocity; D005260:Female; D006801:Humans; D008269:Macular Edema / Q000175:diagnosis* / Q000209:etiology / Q000503:physiopathology; D008297:Male; D008833:Microcirculation / Q000502:physiology*; D055806:Microvessels / Q000000981:diagnostic imaging / Q000503:physiopathology*; D008875:Middle Aged; D009887:Ophthalmoscopy / Q000379:methods*; D055095:Optics and Photonics; D012039:Regional Blood Flow / Q000502:physiology*; D015203:Reproducibility of Results; D012170:Retinal Vein Occlusion / Q000150:complications / Q000175:diagnosis* / Q000503:physiopathology; D012171:Retinal Vessels / Q000000981:diagnostic imaging / Q000503:physiopathology*