title: HLA-B27-associated uveitis and cystoid macular edema.
abstract: OBJECTIVE
  To determine which ocular and systemic characteristics are associated with cystoid macular edema (CME) in patients with HLA-B27-associated uveitis.
  
  
  METHODS
  The authors reviewed the records of 129 patients (157 eyes) with HLA-B27-associated uveitis seen at the Massachusetts Eye and Ear Infirmary from June 1980 to June 1995. Data obtained from the records included: age, gender, duration of uveitis, follow-up duration, ocular and systemic findings, presence of CME, therapeutic intervention, and visual outcome.
  
  
  RESULTS
  Twenty-one of 157 eyes (13.4%) with HLA-B27-associated uveitis presented with or subsequently developed CME. In 14 (67%) eyes with CME, vitreous cells were noted either at presentation or during follow-up. Forty-nine of 136 eyes (36%) without CME had vitreous cells at presentation or developed vitreous cells during follow-up. The estimated odds ratio for developing CME associated with the presence of vitreous cells was 2.9 (95% confidence interval: 1.0-8.3). No other demographic, ocular, or systemic characteristics appeared to be associated with the presence of CME.
  
  
  CONCLUSIONS
  The presence of vitreous cells in patients with HLA-B27-associated uveitis may indicate an increased risk of CME development.
authors.affiliation: Department of Ophthalmology, Massachusetts Eye and Ear Infirmary, Boston, MA 02114, USA.
authors.forename: H S
authors.initials: HS
authors.lastname: Uy
authors.forename: W G
authors.initials: WG
authors.lastname: Christen
authors.forename: C S
authors.initials: CS
authors.lastname: Foster
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D005260:Female; D005500:Follow-Up Studies; D015796:HLA-B27 Antigen / Q000032:analysis*; D006801:Humans; D008269:Macular Edema / Q000209:etiology*; D008297:Male; D008875:Middle Aged; D016017:Odds Ratio; D012307:Risk Factors; D014606:Uveitis, Anterior / Q000276:immunology*; D014822:Vitreous Body / Q000473:pathology
chemical_list: D015796:HLA-B27 Antigen