To evaluate by multifocal electroretinograms (mfERG) the macular function before and after combined treatment with photodynamic
therapy (PDT) and intravitreal bevacizumab in eyes suffering from choroidal neovascularization (CNV) due to age-related macular
degeneration (AMD). 15 eyes of 15 patients with subfoveal CNV were studied before and after the combined treatment. The post-treatment
follow-up was 6 months. MfERG recordings were performed in each patient before and 1, 3, and 6 months after the treatment.
The mean N1 response amplitudes tended to increase after the treatment, and ring 2 response amplitude was significantly increased
at 3 and 6 months compared to baseline (
P = 0.033, 0.005, respectively). For mean P1 response amplitudes, there was a significant increase in retinal response amplitudes
in ring 1–3 at 6 months (
P = 0.036, 0.013, 0.008, respectively). No statistically significant difference in both mean N1 and P1 latency was observed
for any ring over the course of treatment. PDT combined with intravitreal bevacizumab can increase the response amplitudes
of mfERG in neovascular AMD patients.
Keywords Age-related macular degeneration - Photodynamic therapy - Bevacizumab - Choroidal neovascularization - Multifocal electroretinography
The study conformed to the provisions of the Declaration of Helsinki and informed consent was obtained from all patients.