Abstract
To determine the percentage of Japanese patients with age-related macular degeneration (AMD) who are eligible for photodynamic therapy (PDT) with verteporfin who have either polypoidal choroidal vasculopathy (PCV) or choroidal neovascularization (CNV) with retinochoroidal anastomosis (RCA). The medical charts of 82 consecutive patients (83 eyes) with subfoveal CNV due to AMD were reviewed. Initially, we determined which of these eyes were eligible for PDT by using the criteria reported by two large randomized control studies, that is, the Treatment of Age-related Macular Degeneration with Photodynamic Therapy (TAP) study and the Verteporfin in Photodynamic Therapy (VIP) study. Among the PDT-eligible patients, the percentage of eyes with PCV or CNV with RCA was determined by indocyanine green angiography (ICGA). In total, 36 eyes (43%) of the 83 eyes were PDT-eligible; 17 (20%) based on the TAP study criteria, and 19 (23%) based on the VIP study criteria. Among these PDT-eligible eyes, ICGA revealed that 12 (33%) had PCV and 2 (6%) had CNV with RCA. With ICGA, PCV or CNV with RCA were recognized in a substantial proportion of cases eligible for PDT based on the two clinical studies. Considering that the treatment efficacy of PDT for PCV or RCA has not been established, detection of PCV or RCA prior to PDT with ICGA is highly recommended.
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