title: Comparative assessment of photodynamic therapy for typical age-related macular degeneration and polypoidal choroidal vasculopathy: a multicenter study in Hyogo prefecture, Japan.
abstract: OBJECTIVE
  We aimed to evaluate the effects of photodynamic therapy (PDT) on different phenotypes of age-related macular degenerations (AMD): typical AMD (tAMD) and polypoidal choroidal vasculopathy (PCV).
  
  
  METHODS
  246 eyes from 242 patients (tAMD: 139, PCV: 107 eyes) were recruited. Gender, age, best-corrected visual acuity (BCVA) before treatment, greatest linear dimension before treatment, lesion phenotype and PDT frequency were evaluated for predicting the BCVA at 12 months after PDT using stepwise multiple regression analyses. Additionally, 125 eyes with tAMD and 97 eyes with PCV followed up for more than 12 months after the final PDT were compared for the recurrence period.
  
  
  RESULTS
  In the stepwise analysis, a younger age, better pretreatment BCVA, lower PDT frequency, lesions with PCV and a smaller pretreatment greatest linear dimension were all significantly beneficial for a better BCVA at 12 months after PDT. PCV showed a significantly lower PDT frequency and greater improvement in the BCVA than tAMD. The recurrence period of PCV was significantly later than that of tAMD.
  
  
  CONCLUSIONS
  The phenotype of AMD is significantly correlated with its prognosis after PDT. PCV showed a significantly better response to PDT in terms of BCVA improvement and effect durability.
authors.affiliation: Department of Surgery, Division of Ophthalmology, Kobe University Graduate School of Medicine, Kobe, Japan.
authors.forename: Shigeru
authors.initials: S
authors.lastname: Honda
authors.forename: Hisanori
authors.initials: H
authors.lastname: Imai
authors.forename: Kenji
authors.initials: K
authors.lastname: Yamashiro
authors.forename: Yasuo
authors.initials: Y
authors.lastname: Kurimoto
authors.forename: Noriko
authors.initials: N
authors.lastname: Kanamori-Matsui
authors.forename: Yasuaki
authors.initials: Y
authors.lastname: Kagotani
authors.forename: Yasushi
authors.initials: Y
authors.lastname: Tamura
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Yamamoto
authors.forename: Sotaro
authors.initials: S
authors.lastname: Ohoto
authors.forename: Hitoshi
authors.initials: H
authors.lastname: Takagi
authors.forename: Mamoru
authors.initials: M
authors.lastname: Uenishi
authors.forename: Akira
authors.initials: A
authors.lastname: Negi
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D002829:Choroid / Q000098:blood supply*; D020256:Choroidal Neovascularization / Q000175:diagnosis / Q000188:drug therapy*; D005260:Female; D005451:Fluorescein Angiography; D005500:Follow-Up Studies; D006801:Humans; D008268:Macular Degeneration / Q000175:diagnosis / Q000188:drug therapy*; D008297:Male; D008875:Middle Aged; D016491:Peripheral Vascular Diseases / Q000175:diagnosis / Q000188:drug therapy*; D010778:Photochemotherapy; D011379:Prognosis; D041623:Tomography, Optical Coherence; D014792:Visual Acuity / Q000502:physiology