title: SD-OCT to distinguish papilledema from pseudopapilledema.
abstract: METHODS
  Two patients presented with headache and bilateral papillary edema. Patient 1 was found to have a papilledema (P) with intracranial pressure of 32cmH2O. Patient 2 was found to have a migraine with a pseudopapilledema (PP) (optic nerve head drusen). SD-OCT was used to image the optic disc, subretinal hyporeﬂective space (SHS), and alpha-angle (Aα).
  
  
  CONCLUSIONS
  Optic disc SD-OCT may be useful for differentiating disc morphology in P and PP. The area of the SHS and the Aα were higher in the P patient than in the patient with PP.
authors.affiliation: Servicio de Oftalmología, Hospital Clínico Universitario, Valladolid, España. Electronic address: victor_asensio@orangemail.es.
authors.forename: V M
authors.initials: VM
authors.lastname: Asensio-Sánchez
authors.affiliation: Servicio de Oftalmología, Hospital Clínico Universitario, Valladolid, España.
authors.forename: L
authors.initials: L
authors.lastname: Trujillo-Guzmán
mesh_terms: D000328:Adult; D015785:Eye Diseases, Hereditary / Q000175:diagnosis / Q000000981:diagnostic imaging* / Q000209:etiology / Q000473:pathology; D005260:Female; D006801:Humans; D008881:Migraine Disorders / Q000150:complications / Q000175:diagnosis; D009412:Nerve Fibers / Q000648:ultrastructure; D009765:Obesity / Q000150:complications; D009898:Optic Disk / Q000000981:diagnostic imaging / Q000648:ultrastructure; D015594:Optic Disk Drusen / Q000150:complications / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000473:pathology; D009901:Optic Nerve Diseases / Q000175:diagnosis / Q000000981:diagnostic imaging* / Q000209:etiology / Q000473:pathology; D010211:Papilledema / Q000175:diagnosis / Q000000981:diagnostic imaging* / Q000209:etiology / Q000473:pathology; D011559:Pseudotumor Cerebri / Q000150:complications / Q000175:diagnosis; D041623:Tomography, Optical Coherence / Q000379:methods*
keywords: Alpha-angle; Espacio hiporeflectivo subretiniano; Papiledema; Papilledema; Pseudopapilledema; SD-OCT; Seudopapiledema; Subretinal hyporeﬂective space; Ángulo alfa