PGF and conjunctivitis: Notably, the miRNAs target a total of 16 overlapping genes (ARHGEF5, CCL22, CD276, LGALS9, MIF, PGF, PTGDS, PTGER1, B3GAT1, SOCS3, ICOSLG, TGM2, MMP25, NGFR, FOXP3, and HRH1), which are linked to all forms of conjunctivitis (Table 3).