title: Analysis of the morphology and vascular layers of the choroid in retinitis pigmentosa using spectral-domain OCT.
abstract: OBJECTIVE
  To analyze choroidal morphology and vascular layers in eyes with retinitis pigmentosa (RP) using spectral-domain optical coherence tomography.
  
  
  METHODS
  Cross-sectional, retrospective analysis of 14 patients (14 eyes) with RP and 33 healthy subjects (33 eyes) who underwent high-definition one-line raster scanning at a single center. Two independent raters evaluated the morphology, thickness, and vascular layers of the choroid in both groups.
  
  
  RESULTS
  The choroid had an irregular shape in 11 of 14 eyes (79%) with RP. The thickest point of choroid was not subfoveal as in healthy eyes, and exaggerated nasal thinning of the choroid was observed in nine of 14 eyes (65%) with RP. Mean subfoveal total choroidal thickness and large choroidal vessel layer thickness were significantly lower in eyes with RP (P = .04 and P = .02, respectively) than in healthy eyes.
  
  
  CONCLUSIONS
  Choroidal morphology is altered and an exaggerated thinning of the large choroidal vessel layer is observed in eyes with RP. Further studies involving correlation of disease stage and severity with choroidal changes may provide further insight into the involvement of choroid in RP and other inherited retinal dystrophies.
authors.affiliation: New England Eye Center, Tufts Medical Center, Boston, MA 02111, USA.
authors.forename: Mehreen
authors.initials: M
authors.lastname: Adhi
authors.forename: Caio V
authors.initials: CV
authors.lastname: Regatieri
authors.forename: Lauren A
authors.initials: LA
authors.lastname: Branchini
authors.forename: Jason Y
authors.initials: JY
authors.lastname: Zhang
authors.forename: Ahmad A
authors.initials: AA
authors.lastname: Alwassia
authors.forename: Jay S
authors.initials: JS
authors.lastname: Duker
mesh_terms: D000328:Adult; D000368:Aged; D002829:Choroid / Q000098:blood supply / Q000473:pathology*; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012174:Retinitis Pigmentosa / Q000473:pathology*; D012189:Retrospective Studies; D041623:Tomography, Optical Coherence / Q000379:methods*; D014792:Visual Acuity; D055815:Young Adult