INTRAVITREAL AFLIBERCEPT AND RANIBIZUMAB INJECTIONS FOR TYPE 3 NEOVASCULARIZATION

Purpose: To compare the effectiveness of intravitreal injection of aflibercept with ranibizumab in patients with Type 3 neovascularization. Methods: Sixty-three treatment-naive eyes with Type 3 neovascularization (58 patients) were retrospectively analyzed. The eyes had received intravitreal aflibercept or ranibizumab injections. All patients were treated using an initial series of three monthly loading injections, followed by further injections as required. The visual and anatomical outcomes of treatment were evaluated after 12 months. Results: The mean best-corrected visual acuity in the aflibercept-treated group (21 eyes), expressed as the logarithm of the minimum angle of resolution, improved from 0.71 +/- 0.42 (Snellen equivalent; 20/102) to 0.54 +/- 0.39 (20/69) after 12 months of treatment (P = 0.022). Similarly, in the ranibizumab-treated group (42 eyes), the best-corrected visual acuity improved from 0.68 +/- 0.38 (20/95) to 0.53 +/- 0.36 (20/67) (P = 0.013) at 12 months. The central foveal thickness decreased in the aflibercept-treated group from 356 +/- 139 mu m to 212 +/- 155 mu m and in the ranibizumab-treated group from 348 +/- 177 mu m to 208 +/- 161 mu m (P = 0.014 and P = 0.017, respectively). There was no significant difference between the groups about improvement in best-corrected visual acuity or decrease in central foveal thickness. However, geographic atrophy was significantly more frequent in the aflibercept-treated group, occurring in 42.9% of eyes, than in the ranibizumab-treated group (19.0% of eyes; P = 0.045). Conclusion: There was no difference between the aflibercept and ranibizumab treatments in terms of visual acuity improvement after 12 months in patients with Type 3 neovascularization. However, geographic atrophy developed more frequently in the aflibercept-treated group.