Choroidal thickness outside the laser irradiation area after photodynamic therapy in polypoidal choroidal vasculopathy
- 243 Downloads
To evaluate changes in choroidal thickness adjacent to the area of laser application after photodynamic therapy (PDT) in patients with polypoidal choroidal vasculopathy (PCV) using enhanced depth imaging spectral-domain optical coherence tomography.
Masked observers measured the choroidal thickness at the subfovea and superior, inferior and temporal areas adjacent to the area of laser application before, 2 days, 1 week and 1 and 3 months after treatment.
Thirty-seven patients with PCV treated with PDT with verteporfin were included. The mean subfoveal choroidal thickness decreased significantly (P < 0.001) from 256 ± 115 μm at baseline to 207 ± 111 μm at 3 months; the mean outside choroidal thickness including the superior, inferior and temporal areas decreased significantly (P < 0.001) from 240 ± 92 μm at baseline to 209 ± 86 μm at 3 months.
PDT affected not only the subfoveal choroid, but also the choroid outside the area of laser application in PCV.
KeywordsPhotodynamic therapy Polypoidal choroidal vasculopathy Enhanced depth imaging spectral-domain optical coherence tomography Choroidal thickness
- 1.Treatment of Age-Related Macular Degeneration with Photodynamic Therapy (TAP) Study Group. Photodynamic therapy of subfoveal choroidal neovascularization in age-related macular degeneration with verteporfin: one-year results of 2 randomized clinical trials—TAP report 1. Arch Ophthalmol. 1999;117:1329–45.Google Scholar
- 2.Japanese Age-Related Macular Degeneration Trial (JAT) Study Group. Japanese age-related macular degeneration trial: 1-year results of photodynamic therapy with verteporfin in Japanese patients with subfoveal choroidal neovascularization secondary to age-related macular degeneration. Am J Ophthalmol. 2003;136:1049–61.CrossRefGoogle Scholar
- 3.Verteporfin Roundtable 2000 and 2001 Participants; study group principal investigators. Guidelines for using verteporfin (Visudyne) in photodynamic therapy to treat choroidal neovascularization due to age-related macular degeneration and other causes. Retina. 2002;22:6–18.Google Scholar