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01.08.2016 | original article | Ausgabe 15-16/2016

Wiener klinische Wochenschrift 15-16/2016

Predictors of 1-year visual outcome in OCT analysis comparing ranibizumab monotherapy versus combination therapy with PDT in exsudative age-related macular degeneration

Zeitschrift:
Wiener klinische Wochenschrift > Ausgabe 15-16/2016
Autoren:
MD Birgit Weingessel, MD, PhD Kata Mihaltz, MD Pia Veronika Vécsei-Marlovits

Summary

Aim

The aim of this study was to find predictive factors of 1-year visual outcome, analyzing novel optical coherence tomography (OCT) biomarkers in exsudative age-related macular degeneration (choroidal neovascularization (CNV)) in two groups of different treatment modalities.

Methods

In all, 34 consecutive patients with new-onset CNV were randomized 1:1 to receive either ranibizumab monotherapy or ranibizumab combined with photodynamic therapy (PDT) with verteporfin. After three initial injections with ranibizumab, re-treatment was performed according to an as-needed scheme; PDT was performed once at baseline. Best-corrected visual acuity (BCVA) and OCT parameters like central macular volume (CMV), central macular thickness (or central retinal thickness (CRT)), subretinal and intraretinal fluid, fibrovascular lesion thickness, or inner segment/outer segment (IS/OS) junction were analyzed.

Results

After 12 months, a visual gain of 6.1 letters was found in the monotherapy group, whereas patients in the combination therapy group lost − 4.8 letters from baseline to the 12-month visit. CMV and CRT decreased considerably between baseline and month 2–3 in both groups, with a following slight increase until month 12. Additional application of PDT had negative effect to 12-month BCVA, whereas higher baseline BCVA and integrity of the IS/OS junction at month 12 had positive effect to 12-month BCVA.

Conclusions

Better baseline BCVA and the integrity of IS/OS junction at 12-month visit were the most important predictive factors for final BCVA. Combination therapy caused worse final BCVA and a higher degree of IS/OS disruption.

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