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01 June 2012

A prospective study on different methods for the treatment of choroidal neovascularization. The efficacy of verteporfin photodynamic therapy, intravitreal bevacizumab and transpupillary thermotherapy in patients with neovascular age-related macular degeneration

Michał S. NowakABCDEF, Piotr JurowskiAD, Andrzej GrzybowskiEF, Roman GośA, Mirosław PastuszkaB, Andrzej KapicaB, Janusz ŚmigielskiC

DOI: 10.12659/MSM.882907

Med Sci Monit 2012; 18(6): CR374-380

Abstract

Background: The aim of this study was to compare the efficacy of verteporfin photodynamic therapy (PDT), intravitreal injections of bevacizumab (IVB) and transpupillary thermotherapy (TTT) in patients with neovascular age-related macular degeneration (AMD).
Material/Methods: The study design was a prospective, interventional, comparative case series. Between December 2006 and March 2009, 426 eyes of 426 consecutive patients presenting with neovascular AMD were included into the study. Patients presented with subfoveal CNV predominantly classic, minimally classic, and occult with no classic component; lesion size less than 5000 µm in the greatest linear dimension, and the area of hemorrhages ≤1/3 were randomized to receive either PDT (group I) or IVB (group II) in a 1:1 ratio. Other patients with CNV were included into the group III and received TTT.
Results: One hundred eyes were treated with PDT. Mean baseline logMAR BCVA was 0.62 and final visual acuity decreased to 0.74 (p<0.05, Wilcoxon test); 104 eyes were treated with IVB. Mean baseline BCVA was 0.82 and final visual acuity increased to 0.79 (p>0.05, Wilcoxon test); 222 patients were treated with TTT. Mean baseline BCVA was 1.10 and final visual acuity decreased to 1.15 (p>0.05, Wilcoxon test). Among all eyes the average number of treatment sessions was 2.34 (SD 1.17).
Conclusions: Our study shows that IVB injections had the best efficacy in the improvement of final BCVA. However, both IVB and TTT demonstrated good stabilization of vision. Although after PDT final BCVA was significantly worse from baseline, it may also be beneficial for some patients with neovascular age-related macular degeneration.

Keywords: Photosensitizing Agents - therapeutic use, Porphyrins - therapeutic use, Photochemotherapy, Macular Degeneration - physiopathology, Intravitreal Injections, Hyperthermia, Induced - methods, Demography, Choroidal Neovascularization - physiopathology, Antibodies, Monoclonal, Humanized - therapeutic use, Aged, 80 and over, Prospective Studies, Pupil - drug effects, Visual Acuity - drug effects

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Medical Science Monitor Basic Research eISSN: 2325-4416
Medical Science Monitor Basic Research eISSN: 2325-4416