title: Characteristics of Fundus Autofluorescence in Active Polypoidal Choroidal Vasculopathy.
abstract: OBJECTIVE
  To define characteristic fundus autofluorescence (FAF) findings in eyes with active polypoidal choroidal vasculopathy (PCV).
  
  
  METHODS
  Thirty-five eyes of 29 patients with active PCV who were diagnosed at Ege University Faculty of Medicine, Department of Ophthalmology, Retina Division between January 2012 and November 2014 were included in the study. All the patients underwent a complete ophthalmological examination including fundus photography, spectral-domain optical coherence tomography, fluorescein angiography, FAF photography, and indocyanine green angiography (ICGA). ICGA was used to diagnose active PCV and identify lesion components. FAF findings were described at the retinal site of the corresponding lesions identified and diagnosed using ICGA.
  
  
  RESULTS
  The mean age of the 29 study patients (15 men, 14 women) was 64.6±7.5 years (range, 54-82 years). ICGA revealed active PCV in 35 eyes, consisting of polypoid lesions in 11 eyes (31.4%), branching vascular networks (BVN) in 10 eyes (28.6%), and a combination of polypoid lesions and BVNs in 14 eyes (40%). On FAF images, 4 different patterns were detected at the corresponding retinal sites of 25 polypoid lesions detected by ICGA: confluent hypoautofluorescence with a hyperautofluorescent ring in 18 eyes (72%), hyperautofluorescence with hypoautofluorescent ring in 2 eyes (8%), confluent hypoautofluorescence in 1 eye (4%), and granular hypoautofluorescence in 1 eye (4%). The remaining 3 eyes (12%) demonstrated blocked hypoautofluorescence because of the excessive hemorrhaging in the macula. The FAF images showed the granular hypoautofluorescent FAF pattern in all 24 BVNs (100%) consistent with the location of the lesions on ICGA.
  
  
  CONCLUSIONS
  The typical PCV lesions, polypoid lesions and BVNs had characteristic autofluorescent findings on FAF imaging. Non-invasive, quick, and repeatable FAF imaging can be considered a reliable and helpful diagnostic technique for the diagnosis of active PCV.
authors.affiliation: Ege University Faculty of Medicine, Department of Ophthalmology, İzmir, Turkey.
authors.forename: Zafer
authors.initials: Z
authors.lastname: Öztaş
authors.affiliation: Ege University Faculty of Medicine, Department of Ophthalmology, İzmir, Turkey.
authors.forename: Jale
authors.initials: J
authors.lastname: Menteş
authors.affiliation: Ege University Faculty of Medicine, Department of Ophthalmology, İzmir, Turkey.
authors.forename: Serhad
authors.initials: S
authors.lastname: Nalçacı
authors.affiliation: Buca Seyfi Demirsoy State Hospital, Ophthalmology Clinic, İzmir, Turkey.
authors.forename: Mine
authors.initials: M
authors.lastname: Barış
keywords: Autofluorescence; Polypoidal choroidal vasculopathy; branching vascular network; fundus autofluorescence; polypoid