GDF15 and retinal artery occlusion: <h4>Purpose</h4>We aimed to investigate the association between circulating growth differentiation factor-15 (GDF15) levels and retinal artery occlusion (RAO), and to assess the diagnostic performance of GDF15 for discriminating RAO patients from controls.<h4>Materials and methods</h4>In this cross-sectional study, we quantified serum GDF15 levels using enzyme-linked immunosorbent assay (ELISA).