title: Chorioretinal anastomosis and photodynamic therapy: a two-year follow-up study.
abstract: BACKGROUND
  To evaluate the two-year efficacy of photodynamic therapy with Visudyne (PDT) in neovascular age-related macular degeneration (AMD) eyes with chorioretinal anastomosis (CRA).
  
  
  METHODS
  A non-randomized, institutional, prospective study, of 28 consecutive eyes of 23 patients, with CRA, treated with PDT. Masked best corrected visual acuity (VA) and angiographic features at baseline and during the period of two years were evaluated.
  
  
  RESULTS
  Twenty eight eyes completed one year and 19 eyes completed two years of follow-up. The number of treatments was 3 in the first year, and 0.8 in the second year. A VA loss < 3 lines occurred in 53% of the eyes, at two years. Treated eyes lost 0.5 lines in the first year and 2.4 lines in the second (p < 0.01). Recurrence with additional significant VA loss occurred in four eyes (21%) during the second year. Fourteen eyes (74%) showed no fluorescein leakage at two years.
  
  
  CONCLUSIONS
  AMD eyes with chorioretinal anastomosis can benefit from PDT with Verteporfin at two years. However, during the second year significant additional VA loss occurs mainly due to recurrence. New modalities of treatment are necessary to achieve VA improvement in CRA eyes.
authors.affiliation: Department of Ophthalmology, University Hospital of Coimbra, Praceta Mota Pinto, 3000 Coimbra, Portugal. rufino.silva@oftalmologia.co.pt
authors.forename: Rufino M
authors.initials: RM
authors.lastname: Silva
authors.forename: M Luz
authors.initials: ML
authors.lastname: Cachulo
authors.forename: João
authors.initials: J
authors.lastname: Figueira
authors.forename: José R Faria
authors.initials: JR
authors.lastname: de Abreu
authors.forename: J G
authors.initials: JG
authors.lastname: Cunha-Vaz
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001164:Arteriovenous Fistula / Q000175:diagnosis / Q000188:drug therapy* / Q000503:physiopathology; D002829:Choroid / Q000098:blood supply*; D005260:Female; D005451:Fluorescein Angiography; D005500:Follow-Up Studies; D006801:Humans; D007208:Indocyanine Green; D008268:Macular Degeneration / Q000175:diagnosis / Q000188:drug therapy / Q000503:physiopathology; D008297:Male; D010778:Photochemotherapy; D017319:Photosensitizing Agents / Q000627:therapeutic use*; D011166:Porphyrins / Q000627:therapeutic use*; D011446:Prospective Studies; D012008:Recurrence; D012171:Retinal Vessels / Q000002:abnormalities*; D041623:Tomography, Optical Coherence; D016896:Treatment Outcome; D000077362:Verteporfin; D014792:Visual Acuity / Q000502:physiology
chemical_list: D017319:Photosensitizing Agents; D011166:Porphyrins; D000077362:Verteporfin; D007208:Indocyanine Green