HIF1A and macular retinal edema: The correlations of HIF-1α mRNA and miR-210 in the aqueous humor of patients with CRVO combined with macular edema with vasoactive molecule levels, the diagnostic value of HIF-1α mRNA and miR-210 levels in the aqueous humor in CRVO combined with macular edema, as well as the factors influencing the occurrence of CRVO combined with macular edema were analyzed.