• Current eye research · Dec 2020

    Optical Coherence Tomography Angiography of Inflammatory Choroidal Neovascularization Early Response after Anti-VEGF Treatment.

    • Wenyi Tang, Jingli Guo, Wei Liu, and Gezhi Xu.
    • Department of Ophthalmology, Eye and ENT Hospital of Fudan University , Shanghai, China.
    • Curr. Eye Res. 2020 Dec 1; 45 (12): 1556-1562.

    AbstractPurpose: To describe the optical coherence tomography angiography (OCTA) features of active inflammatory choroidal neovascularization (CNV) and characterize the early responses of anti-vascular endothelial growth factor (VEGF) treatment for inflammatory CNV. Methods: OCT angiography images of inflammatory CNV were acquired and analyzed using the RTVue XR Avanti with AngioVue at baseline as well as fluorescein angiography and spectral-domain optical coherence tomography (SD-OCT). OCTA scans were sequentially obtained 1 day before treatment, 1 day, 7 days, 14 days, and 30 days after anti-VEGF injection. Changes of the selected area and flow area of CNV on OCTA were measured along with those of the central macular thickness (CMT) on corresponding SD-OCT. Results: 19 eyes of 18 uveitic patients (mean age: 36.83 ± 10.05 years) presenting with active CNV were included in the prospective case series. The OCTA showed a 100% sensitivity for inflammatory CNV detection in 23 of 23 CNV lesions, revealing prevailing two neovascular phenotypes: vascular loops and intertwined nets. After anti-VEGF injection, as early as the 1-day follow-up, the mean selected area and the mean flow area of inflammatory CNV on OCTA were significantly reduced (both P < .05) while the average CMT on SD-OCT did not change until the 7-day follow-up. OCTA was able to detect the reincrease of capillary density and vessel size predominantly in the second phenotype 14-30 days after anti-VEGF injection. Conclusions: OCTA not only allows for noninvasive detection of inflammatory CNV with a high sensitivity but also facilitates its sequential observation after anti-VEGF treatment. The treatment outcomes are observable at day 1 post treatment. OCTA may be a useful tool for diagnosing inflammatory CNV and evaluating the early response to anti-VEGF treatment.

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