title: Branch retinal vein occlusion-associated subretinal hemorrhage.
abstract: OBJECTIVE
  To study the pathomorphology of subretinal hemorrhage (SRH) seen in eyes with branch retinal vein occlusion (BRVO) and its association with visual prognosis.
  
  
  METHODS
  We retrospectively reviewed 42 consecutive patients (42 eyes) with BRVO that affected the fovea. Retinal structural changes were examined by spectral domain optical coherence tomography (SD-OCT).
  
  
  RESULTS
  On SD-OCT sections, serous retinal detachment was seen at the fovea in 35 eyes, 18 of which accompanied foveal SRH. While initial detection of foveal SRH had no correlation with initial visual acuity (VA), it was correlated with poorer final VA (r = 0.361, P = 0.019). Our patients were classified into two groups by the initial detection of foveal SRH, and initial VA was not different between these two groups. At the final examination, damaged lengths in the foveal photoreceptor layer were significantly longer in the SRH-positive group than those in the SRH-negative group (P = 0.004), and final VA in the SRH-positive group was significantly worse than that in the SRH-negative group (P = 0.019).
  
  
  CONCLUSIONS
  Foveal SRH is not an uncommon feature in BRVO and may cause subsequent damage to the foveal photoreceptor layer, resulting in poor visual function.
authors.affiliation: Department of Ophthalmology and Visual Sciences, Kyoto University Graduate School of Medicine, Sakyo-ku, Kyoto 606-8507, Japan.
authors.forename: Yuki
authors.initials: Y
authors.lastname: Muraoka
authors.forename: Akitaka
authors.initials: A
authors.lastname: Tsujikawa
authors.forename: Tomoaki
authors.initials: T
authors.lastname: Murakami
authors.forename: Ken
authors.initials: K
authors.lastname: Ogino
authors.forename: Kazuaki
authors.initials: K
authors.lastname: Miyamoto
authors.forename: Nagahisa
authors.initials: N
authors.lastname: Yoshimura
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D005451:Fluorescein Angiography; D005500:Follow-Up Studies; D005654:Fundus Oculi; D006801:Humans; D008297:Male; D008875:Middle Aged; D012166:Retinal Hemorrhage / Q000175:diagnosis / Q000209:etiology*; D012170:Retinal Vein Occlusion / Q000150:complications* / Q000175:diagnosis; D012189:Retrospective Studies; D041623:Tomography, Optical Coherence; D014792:Visual Acuity