Systemic lupus erythematosus (SLE) is a chronic, systemic, autoimmune connective tissue disease that affects several vascular territories. This systematic review sought to assess the role of optical coherence tomography angiography (OCTA) in detecting subclinical microvascular alterations in SLE patients. PubMed, Scopus, and Web of Science databases were systematically searched until January 21, 2023. Studies using OCTA as a primary diagnostic method to evaluate the macular microvasculature of SLE patients versus healthy controls were included. Primary outcomes were macular vessel density (VD) and foveal zone parameters. A meta-analysis was performed using a random-effects model. Of 301 screened abstracts, 15 were found eligible, enrolling 1246 eyes from 1013 patients. SLE patients presented a reduction of macular VD at both plexuses in all zones (whole scan, fovea, parafovea, and perifovea), and of foveal density compared with healthy controls. No differences were found at foveal avascular zone parameters. SLE patients presented a reduction of macular vessel density without signs or symptoms of SLE ocular involvement. OCTA application for the assessment of subclinical microvascular changes needs to be elucidated with longitudinal studies.Copyright © 2023 Elsevier Inc. All rights reserved.
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