title: Comparison of myopic and nonmyopic disc hemorrhage in primary open-angle glaucoma.
abstract: OBJECTIVE
  To compare the topographic characteristics of myopic and nonmyopic disc hemorrhage (DH) in primary open-angle glaucoma.
  
  
  METHODS
  Patients were assigned to the myopic DH group (spherical equivalent of -1.0 diopters or less) or to the nonmyopic DH group (emmetropia and hyperopia). DH was classified as lamina cribrosa-, cup margin-, disc rim-, or peripapillary-type DH according to its proximal location. The DH types of the two groups were compared using Fisher's exact test. Multivariate logistic regression was used to evaluate the factors associated with myopia.
  
  
  RESULTS
  Thirty-four eyes were assigned to the myopic DH group and 42 eyes to the nonmyopic DH group. A significantly higher proportion (32.4 %) of lamina cribrosa-type DH was found in the myopic DH group than in the nonmyopic DH group (4.8 %; P = 0.008). Eyes with lamina cribrosa-type DH were 12.59 times more likely to be myopic than were eyes with peripapillary-type DH (95 % CI: 1.22-129.53; P = 0.033).
  
  
  CONCLUSIONS
  Lamina cribrosa-type DH was significantly more common in myopic eyes than in nonmyopic eyes. This result suggests that the pathogenesis of DH may differ between myopic DH and nonmyopic DH.
authors.affiliation: Sungmo Eye Hospital, Busan, Korea.
authors.forename: Ho Soong
authors.initials: HS
authors.lastname: Kim
authors.forename: Ki Ho
authors.initials: KH
authors.lastname: Park
authors.forename: Jin Wook
authors.initials: JW
authors.lastname: Jeoung
authors.forename: Joohyun
authors.initials: J
authors.lastname: Park
mesh_terms: D000328:Adult; D000368:Aged; D058453:Emmetropia / Q000502:physiology; D005260:Female; D005902:Glaucoma, Open-Angle / Q000150:complications* / Q000503:physiopathology; D006068:Gonioscopy; D006801:Humans; D006956:Hyperopia / Q000150:complications; D007429:Intraocular Pressure / Q000502:physiology; D008297:Male; D008875:Middle Aged; D009216:Myopia / Q000150:complications* / Q000503:physiopathology; D009887:Ophthalmoscopy; D009898:Optic Disk / Q000473:pathology*; D009901:Optic Nerve Diseases / Q000150:complications* / Q000503:physiopathology; D012029:Refraction, Ocular / Q000502:physiology; D012166:Retinal Hemorrhage / Q000175:diagnosis / Q000209:etiology* / Q000503:physiopathology; D012189:Retrospective Studies; D014792:Visual Acuity / Q000502:physiology; D058609:Visual Field Tests; D014794:Visual Fields / Q000502:physiology