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  • Title: Response of Retinal Sensitivity to Intravitreal Anti-angiogenic Bevacizumab and Triamcinolone Acetonide for Patients with Diabetic Macular Edema over One Year.
    Author: Mylonas G, Schranz M, Scholda C, Karst S, Reiter G, Baumann L, Schmidt-Erfurth U, Kriechbaum K.
    Journal: Curr Eye Res; 2020 Sep; 45(9):1107-1113. PubMed ID: 31961224.
    Abstract:
    AIM: The aim of this study was to evaluate and compare microperimetry changes in patients with clinically significant diabetic macular edema secondary to diabetes mellitus, following intravitreal injections of bevacizumab or triamcinolone during a follow-up of 1 year after treatment. MATERIALS AND METHODS: 30 patients with clinically significant macular edema were randomized into two groups of 15 patients each. One group initially received three intravitreal injections of 2.5 mg bevacizumab at monthly intervals. The other received a single injection of 8 mg of triamcinolone followed by two sham interventions at monthly intervals. Best-corrected visual acuity (BCVA) and central retinal thickness (CRT) were measured. Macular function was documented by microperimetry at baseline, 3, 6, 9 months and at the last visit of each patient. RESULTS: In the bevacizumab group, the mean differential light threshold (±standard deviation) under therapy improved significantly from 8.40 (± 3.8) dB to 12.8 (±4.3) dB at the 12-month follow-up visit (p ≤ .05), whereas in the triamcinolone group it increased from 8.0 (± 2.4) dB at baseline to 9.3 (±3.6) dB at the last visit without reaching statistical significance (p > .05). The mean differential light thresholds between the two groups were not statistically significant at baseline or the last visit (p > .05). In the bevacizumab group, the improvement (slope) in mean differential light threshold was significantly superior to the Triamcinolone group (Estimate = 0.588, p ≤ .05). CONCLUSION: Central macular function as measured by microperimetry in patients with acute DME improved in addition to anatomical restoration after intravitreal bevacizumab and triamcinolone injection. In our clinical study, the measures of the variables in patients receiving bevacizumab were superior to those receiving triamcinolone throughout the one-year observation period.
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