title: Topographic optic disc analysis by Heidelberg retinal tomography in ocular Behcet's disease.
abstract: OBJECTIVE
  To compare the topographic characteristics of the optic discs in patients with severe and mild ocular Behçet's disease by using Heidelberg retinal tomographaphy (HRT).
  
  
  METHODS
  This prospective study included 47 eyes of 47 patients with ocular BD who were being followed-up at the Uveitis Clinic of the Ankara Ulucanlar Eye Research Hospital, Ankara, Turkey. The patients were divided into two groups. Group 1 consisted of 21 eyes with mild uveitis, and group 2 consisted of 26 eyes with severe uveitis. All patients underwent topographic optic disc analysis by HRT II, and the quantitative optic disc parameters of both groups were compared by non-parametric Mann-Whitney U test.
  
  
  RESULTS
  The mean cup volume, rim volume, cup area, disc area and cup depth in group 1 were found to be statistically significantly greater than those in group 2 (p<0.0001, p = 0.03, p = 0.021, p = 0.01 and p = 0.017, respectively), while the difference between the mean cup-to-disc ratios in group 1 and group 2 were found to be statistically insignificant (p = 0.148).
  
  
  CONCLUSIONS
  A relationship was found between the severity of ocular BD and optic disc topography determined by HRT. In eyes with smaller optic discs, uveitis was observed to have a more severe course with more frequent relapses than those with larger discs.
authors.affiliation: Ankara Ulucanlar Eye Research Hospital, Department of Retinal and Uveal Diseases, Ankara, Turkey. niluferberker@hotmail.com
authors.forename: Nilufer
authors.initials: N
authors.lastname: Berker
authors.forename: Ufuk
authors.initials: U
authors.lastname: Elgin
authors.forename: Pinar
authors.initials: P
authors.lastname: Ozdal
authors.forename: Aygen
authors.initials: A
authors.lastname: Batman
authors.forename: Emel
authors.initials: E
authors.lastname: Soykan
authors.forename: Seyhan S
authors.initials: SS
authors.lastname: Ozkan
mesh_terms: D000328:Adult; D001528:Behcet Syndrome / Q000473:pathology*; D005128:Eye Diseases / Q000473:pathology*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D015863:Iridocyclitis / Q000473:pathology; D008297:Male; D008875:Middle Aged; D009898:Optic Disk / Q000473:pathology*; D011446:Prospective Studies; D012008:Recurrence; D012720:Severity of Illness Index; D014054:Tomography; D015866:Uveitis, Posterior / Q000473:pathology