PURPOSE: To evaluate the visual outcome of patients with subfoveal choroidal neovascularization due to age-related macular degeneration, who received photodynamic therapy (PTD) in a clinical setting and to identify potential predictive visual and angiographic factors. DESIGN: Interventional case series. METHODS: The study included 74 patients with subfoveal choroidal neovascularization who underwent PDT from January 2000 to March 2001 and completed at least 1 year follow-up. All patients received verteporfin PDT and were followed clinically, with fluorescein angiography (74 eyes), and with indocyanine green angiography (65 eyes). A review of the medical records and angiograms was performed. RESULTS: Mean follow-up was 15.6 months. Patients received a mean of 3.4 treatments per year. Sixty-six percent lost less than 3 Snellen lines of visual acuity. Three patients (4%) experienced profound visual acuity loss to finger counting. Final visual acuity was positively correlated with lesion size and visual acuity at presentation. Visual outcome was worse in the presence of cystoid macular edema. On indocyanine green angiography, a round hypofluorescent spot was seen at the site of the PDT, with maintenance of medium and large choroidal vessels. CONCLUSION: Smaller lesion size and better visual acuity at presentation were good predictive signs, whereas cystoid macular edema was found to be a poor prognostic sign for visual outcome following PDT.
PURPOSE: To evaluate the visual outcome of patients with subfoveal choroidal neovascularization due to age-related macular degeneration, who received photodynamic therapy (PTD) in a clinical setting and to identify potential predictive visual and angiographic factors. DESIGN: Interventional case series. METHODS: The study included 74 patients with subfoveal choroidal neovascularization who underwent PDT from January 2000 to March 2001 and completed at least 1 year follow-up. All patients received verteporfin PDT and were followed clinically, with fluorescein angiography (74 eyes), and with indocyanine green angiography (65 eyes). A review of the medical records and angiograms was performed. RESULTS: Mean follow-up was 15.6 months. Patients received a mean of 3.4 treatments per year. Sixty-six percent lost less than 3 Snellen lines of visual acuity. Three patients (4%) experienced profound visual acuity loss to finger counting. Final visual acuity was positively correlated with lesion size and visual acuity at presentation. Visual outcome was worse in the presence of cystoid macular edema. On indocyanine green angiography, a round hypofluorescent spot was seen at the site of the PDT, with maintenance of medium and large choroidal vessels. CONCLUSION: Smaller lesion size and better visual acuity at presentation were good predictive signs, whereas cystoid macular edema was found to be a poor prognostic sign for visual outcome following PDT.
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