[Two-year results following photodynamic therapy for age-related macular degeneration]

To investigate the visual outcome 2 years after photodynamic therapy (PDT) in patients with exudative age-related macular degeneration (AMD) and polypoidal choroidal vasculopathy (PCV).Thirty-six eyes undergoing PDT were retrospectively studied. Seventeen eyes of AMD (AMD group) and nineteen eyes of PCV (PCV group) were evaluated.In the AMD group, the mean pre-PDT visual acuity was 0.19. The mean post-PDT visual acuity was 0.16 two years after the PDT. Two years after PDT, the Log MAR visual acuity improved by 0.2 or more in 3 eyes (17.7%), but it decreased by 0.2 or more in 4 eyes (23.5%). In the PCV group, the mean pre-PDT visual acuity was 0.34. The mean post-PDT visual acuity was 0.20 two years after PDT. The Log MAR visual acuity improved by 0.2 or more in 5 eyes (26.3%), but it decreased by 0.2 or more in 7 eyes (36.8%).In this series of patients, more than half of the two groups were able to maintain their visual acuity for 2 years after PDT. Although the average visual acuity of the AMD group was worse than that of the PCV group, the AMD group was able to maintain their visual acuity for 2 years after PDT. The average visual acuity of the PCV group decreased 2 years after PDT.