CALCA and keratoconus: To this end, we fabricated four types of electrospun nanofibrous membranes, PVA and PVA/KC via electrospinning and PVA/KC/Cur5 and PVA/KC/Cur20, in which a Cur solution was electrosprayed onto the PVA/KC membranes for 5 and 20 min, respectively.