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  • Title: VASCULAR REMODELING OF CHOROIDAL NEOVASCULARIZATION AFTER ANTI-VASCULAR ENDOTHELIAL GROWTH FACTOR THERAPY VISUALIZED ON OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY.
    Author: Miere A, Butori P, Cohen SY, Semoun O, Capuano V, Jung C, Souied EH.
    Journal: Retina; 2019 Mar; 39(3):548-557. PubMed ID: 29210939.
    Abstract:
    PURPOSE: To describe the qualitative and quantitative changes in choroidal neovascularization (CNV) flow pattern after anti-vascular endothelial growth factor therapy, by optical coherence tomography angiography (OCTA). METHODS: Consecutive patients with neovascular age-related macular degeneration underwent multimodal imaging, including OCTA at initial examination and at last visit. High-flow networks in the choriocapillaris segmentation of OCTA were qualitatively and quantitatively analyzed at baseline and at follow-up, to characterize vascular flow changes after anti-vascular endothelial growth factor treatment and to correlate these changes with final exudation signs on spectral domain optical coherence tomography. RESULTS: Seventeen eyes were included. Mean follow-up was of 11.7 ± 3.3 months. Baseline images showed six medusa pattern (35.3%), four seafan pattern (23.5%), and seven indistinct network patterns (41.2%). Mean CNV area at baseline was 1.58 ± 1.72 mm. Final OCTA images revealed a decrease in CNV total area of 21.6%. In 6/17 eyes, the baseline neovascular pattern was unchanged; these cases were associated with exudation at the final spectral domain optical coherence tomography examination (P = 0.034) and a decrease in CNV area of 34.1%. Conversely, in 11/17 eyes (64.7%), the initial pattern had changed to a pruned vascular tree pattern, with variable exudative status on spectral domain optical coherence tomography at the final visit and a decrease in total CNV area of 0.07%. CONCLUSION: The vascular flow remodeling induced by recurrent anti-vascular endothelial growth factor treatment can be assessed by OCTA. Optical coherence tomography angiography may help to accurately evaluate treatment response and to recognize patterns usually associated with recurrent exudative activity.
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