title: The role of episcleral venous pressure in glaucoma associated with Sturge-Weber syndrome.
abstract: OBJECTIVE
  To evaluate the role of episcleral venous pressure (EVP) in the pathogenesis of glaucoma associated with Sturge-Weber syndrome (SWS).
  
  
  METHODS
  EVPs were determined prospectively using an episcleral venomanometer in 22 eyes of 11 patients aged 8-18 years with SWS with or without glaucoma. Pressure measurements in the glaucomatous eyes of patients with SWS were compared to those of patients with facial port wine marks but no glaucoma and to the contralateral uninvolved eye in both groups.
  
  
  RESULTS
  EVP in eyes with glaucoma (mean, 20.9 mm Hg) was significantly higher (P < 0.01) than EVP in contralateral uninvolved eyes (mean, 9.6 mm Hg). In patients with unilateral port wine mark and no glaucoma, EVP was normal for ipsilateral and contralateral eyes (mean, 8.6 mm Hg and 9.6 mm Hg, respectively).
  
  
  CONCLUSIONS
  Our data support the hypothesis that elevated EVP plays an important role in eyes with SWS glaucoma.
authors.affiliation: Jefferson Medical College of Thomas Jefferson University, Philadelphia, Pennsylvania, USA.
authors.forename: Tiffany
authors.initials: T
authors.lastname: Shiau
authors.forename: Narendra
authors.initials: N
authors.lastname: Armogan
authors.forename: David B
authors.initials: DB
authors.lastname: Yan
authors.forename: Hugh G
authors.initials: HG
authors.lastname: Thomson
authors.forename: Alex V
authors.initials: AV
authors.lastname: Levin
mesh_terms: D000293:Adolescent; D015924:Blood Pressure Monitors; D002648:Child; D005134:Eye Neoplasms / Q000150:complications / Q000503:physiopathology*; D005901:Glaucoma / Q000209:etiology / Q000503:physiopathology*; D006801:Humans; D011446:Prospective Studies; D012590:Sclera / Q000098:blood supply*; D013341:Sturge-Weber Syndrome / Q000150:complications / Q000503:physiopathology*; D014690:Venous Pressure / Q000502:physiology*