title: Sveinsson chorioretinal atrophy/helicoid peripapillary chorioretinal degeneration: first histopathology report.
abstract: OBJECTIVE
  To report the histopathologic features in an eye with Sveinsson chorioretinal atrophy (SCRA), also termed helicoid peripapillary chorioretinal degeneration, for the first time.
  
  
  METHODS
  An 82-year-old woman clinically and genetically confirmed to have SCRA.
  
  
  METHODS
  Examination of an eye obtained after death.
  
  
  METHODS
  Light microscopic examination of an eye of an 82-year-old woman documented to have SCRA since the age of 10 years.
  
  
  METHODS
  The findings in ocular tissues were determined by light microscopy.
  
  
  RESULTS
  In the most advanced areas of chorioretinal atrophy, the sensory retina, retinal pigment epithelium (RPE), choriocapillaris, and choroid were absent. In the transition between affected and unaffected areas, the RPE and the outer segments of the photoreceptors only were affected. The optic nerve was smaller than normal, but well myelinated. Other ocular tissues retained a relatively normal appearance for a patient who had died at this age.
  
  
  CONCLUSIONS
  The mildest and presumably earliest morphologic changes involved the photoreceptor outer segments, the RPE, and choriocapillaris in this progressive degenerative disease of the retina and choroid.
authors.affiliation: Department of Ophthalmology, Landspitali University Hospital and Faculty of Medicine, University of Iceland, Reykjavik, Iceland.
authors.forename: Fridbert
authors.initials: F
authors.lastname: Jonasson
authors.forename: Sverrir
authors.initials: S
authors.lastname: Hardarson
authors.forename: Bjorn Mar
authors.initials: BM
authors.lastname: Olafsson
authors.forename: Gordon K
authors.initials: GK
authors.lastname: Klintworth
mesh_terms: D000369:Aged, 80 and over; D001284:Atrophy; D015862:Choroid Diseases / Q000235:genetics / Q000473:pathology*; D005260:Female; D006801:Humans; D009898:Optic Disk / Q000473:pathology*; D009900:Optic Nerve / Q000473:pathology; D020419:Photoreceptor Cells, Vertebrate / Q000473:pathology*; D010857:Pigment Epithelium of Eye / Q000473:pathology*; D012160:Retina / Q000473:pathology; D012162:Retinal Degeneration / Q000235:genetics / Q000473:pathology*