1. Nonperfusion Assessment in Retinal Vein Occlusion: Comparison between Ultra-Widefield Fluorescein Angiography and Widefield OCT-Angiography

    Nonperfusion Assessment in Retinal Vein Occlusion: Comparison between Ultra-Widefield Fluorescein Angiography and Widefield OCT-Angiography

    Purpose: To compare widefield optical coherence tomography-angiography (OCTA) to ultra-widefield fluorescein angiography (UWFA) in the assessment of nonperfusion in retinal vein occlusion (RVO). Methods: Cross-sectional study of 43 eyes of 43 RVO patients examined using both widefield OCTA (Plexelite, Carl Zeiss Meditec) with a panoramic montage of five 12x12mm images and UWFA (Optos®, 200°). Qualitative analysis was performed according to nonperfusion areas (cutoff: 3 disc areas) on widefield OCTA. The quantitative analysis assessed the vascular density (VD) on the widefield OCTA and ischemic index (ISI) on UWFA. Results: ISI on UWFA and VD in the superficial and deep plexus correlated ...

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