Der er udført to randomiserede dobbelt- blinde, placebo- kontrollerede multicenterstudier af 24 måneders varighed (BPD OCR 003 AMD eller Verteporfin in Photodynamic Therapy- AMD [VIP - AMD] og BPD OCR 013 eller Visudyne in Occult Choroidal Neovascularization [VIO]) hos patienter med AMD karakteriseret ved okkult subfoveal CNV uden klassisk komponent.
Two randomised, placebo-controlled, double-masked, multicentre, 24-month studies (BPD OCR 003 AMD, or Verteporfin in Photodynamic Therapy-AMD [VIP-AMD], and BPD OCR 013, or Visudyne in Occult Choroidal Neovascularisation [VIO]) were conducted in patients with AMD characterised by occult with no classic subfoveal CNV.