RESUMO
OBJECTIVE: To report short-term visual and anatomic outcomes of patients who were switched to aflibercept for persistent macular edema associated with central retinal vein occlusion (CRVO). METHODS: Retrospective, consecutive, interventional case series of 17 patients with persistent macular edema secondary to CRVO (defined as intraretinal edema and either <50 µm reduction in central foveal thickness [CFT] or worsening or no improvement in visual acuity [VA] compared to baseline) despite anti-VEGF treatment who were switched to aflibercept treatment. Main outcome measures included VA, anti-VEGF treatment history, and spectral-domain optical coherence tomography evaluation of macular edema and CFT. RESULTS: The mean age was 77 years, and the mean VA at CRVO diagnosis was 20/135 with a CFT of 523.4 µm. Mean number of injections before switching to aflibercept was 12.9 (range: 3-40) and mean number of months of anti-VEGF treatment before switching to aflibercept was 18.7. Mean VA at switch to aflibercept was 20/182 (p = 0.50) with mean CFT of 547.9 µm (p = 0.66). Mean aflibercept injections were 4.0, and mean follow-up from switch to last follow-up was 5.2 months. Final mean VA was 20/115 (p = 0.017), with a CFT of 315.2 µm (p = 0.0012). Of the patients, 35.2% gained ≥3 lines. 29% of patients had complete resolution of macular edema, and the mean change in CFT was -233 µm. CONCLUSIONS: Aflibercept appears to have a beneficial effect on anatomic and VA outcomes in a subset of patients with macular edema secondary to CRVO that is refractory to treatment with bevacizumab and/or ranibizumab.
Assuntos
Inibidores da Angiogênese/uso terapêutico , Edema Macular/tratamento farmacológico , Receptores de Fatores de Crescimento do Endotélio Vascular/uso terapêutico , Proteínas Recombinantes de Fusão/uso terapêutico , Oclusão da Veia Retiniana/tratamento farmacológico , Idoso , Idoso de 80 Anos ou mais , Bevacizumab/uso terapêutico , Substituição de Medicamentos , Feminino , Humanos , Injeções Intravítreas , Edema Macular/diagnóstico por imagem , Edema Macular/fisiopatologia , Masculino , Ranibizumab/uso terapêutico , Oclusão da Veia Retiniana/diagnóstico por imagem , Oclusão da Veia Retiniana/fisiopatologia , Estudos Retrospectivos , Tomografia de Coerência Óptica , Fator A de Crescimento do Endotélio Vascular/antagonistas & inibidores , Acuidade Visual/fisiologiaRESUMO
PURPOSE: To evaluate the outcome of pars plana vitrectomy, subretinal tissue plasminogen activator (t-PA) infusion and intraocular gas tamponade with and without postsurgical antivascular endothelial growth factor (VEGF) injection for thick submacular hemorrhage due to exudative age-related macular degeneration (AMD). DESIGN: Retrospective, comparative, interventional case series. METHODS: setting: 2 retina referral centers. The patient population included 101 eyes of 101 patients with neovascular AMD and thick submacular hemorrhage who underwent surgical displacement of the hemorrhage with or without postoperative anti-VEGF injections. Main outcome measures included degree of blood displacement, best and final postoperative visual acuity (VA), and adverse events. Snellen acuity was converted to logMAR for statistical analysis. RESULTS: All patients were followed for a minimum of 3 months (mean, 15.3 months, range, 3-70 months). In 83 (82%) of 101 eyes, the procedure resulted in complete hemorrhage displacement from the fovea. Mean preoperative VA was 20/2255 (2.05 logMAR). The acuity significantly improved to 20/893 (1.65 logMAR) at month 1 (P < 0.001) at month 1; 20/678 (1.53 logMAR) at month 3 (P < 0.001), and 20/1150 (1.76 logMAR) at month 12 (P = 0.002). Best postoperative visual acuity improved by at least 1 line in 83 (82%) of 101 eyes, and 19.6% of eyes gained 3 lines or more at month 3. The visual acuity of the group of eyes that received postoperative anti-VEGF injection (n = 39) showed greater visual acuity improvement 6 months postoperatively compared to the group of eyes that did not receive postoperative anti-VEGF. Postoperative complications included vitreous hemorrhage in 2 eyes, rhegmatogenous retinal detachment in 4 eyes, and recurrent thick subretinal hemorrhage in 6 eyes. CONCLUSIONS: Vitrectomy with subretinal t-PA injection and gas tamponade was found to be relatively effective for displacement of thick submacular hemorrhage with a significant improvement in visual acuity. There is a loss of acuity over time; the addition of postoperative anti-VEGF therapy may help maintain the visual acuity gains.