title: "En face" optical coherence tomography imaging in type 2 idiopathic macular telangiectasia.
abstract: OBJECTIVE
  To comprehensively evaluate the retinal and choroidal changes in eyes with Type 2 idiopathic macular telangiectasia using "en face" and B-scan spectral domain optical coherence tomography (OCT), and to compare their respective contributions to this evaluation.
  
  
  METHODS
  Eyes with a diagnosis of proliferative or nonproliferative Type 2 macular telangiectasia were prospectively studied. All patients underwent an extensive ophthalmologic examination including biomicroscopic fundus examination, color photography, fundus autofluorescence, fluorescein angiography, B-scan and en face spectral domain OCT.
  
  
  RESULTS
  Twenty eyes of 10 patients were included in this study. En face OCT C-scans and conventional B-scans were both able to show inner crystalline deposits (15%), retinal capillary anomalies (100%), intraretinal cysts (80%), hyperreflective spots in the outer nuclear layer (100%) and external limiting membrane (80%), hyperplastic pigment plaques (30%), intraretinal neovascularization (20%), photoreceptor loss (100%), and choroidal cavitations (30%). En face OCT C-scans provided more information than B-scans on intraretinal neovascularization, photoreceptor loss, and choroidal cavitations. Also, en face OCT C-scans provided better visualization of the retinal vessels and telangiectasia than fluorescein angiography.
  
  
  CONCLUSIONS
  En face OCT is a noninvasive and reproducible technique that helps to better assess and follow up retinal and choroidal processes in Type 2 macular telangiectasia.
authors.affiliation: *Rothschild Ophthalmologic Foundation, Paris, France; †Kleber Retinal Center, Lyon, France; and ‡Lariboisiere Hospital, Paris, France.
authors.forename: Benjamin
authors.initials: B
authors.lastname: Wolff
authors.forename: Chrysanthi
authors.initials: C
authors.lastname: Basdekidou
authors.forename: Vivien
authors.initials: V
authors.lastname: Vasseur
authors.forename: José-Alain
authors.initials: JA
authors.lastname: Sahel
authors.forename: Alain
authors.initials: A
authors.lastname: Gaudric
authors.forename: Martine
authors.initials: M
authors.lastname: Mauget-Faÿsse
mesh_terms: D000368:Aged; D002829:Choroid / Q000473:pathology*; D005260:Female; D005451:Fluorescein Angiography; D006801:Humans; D008297:Male; D008875:Middle Aged; D010781:Photography; D011446:Prospective Studies; D012160:Retina / Q000473:pathology*; D058456:Retinal Telangiectasis / Q000145:classification / Q000175:diagnosis*; D041623:Tomography, Optical Coherence / Q000379:methods*; D014792:Visual Acuity / Q000502:physiology