Osthole (OST), a natural coumarin compound, has shown significant inhibitory effect on corneal neovascularization (CNV). But, its treating CNV is restricted by water insolubility. To overcome this limitation, an OST-loaded microemulsion (OST-ME) was created to improve the drug’s therapeutic after topical administration. The OST-ME formulation comprised Capryol-90 (CP-90), Cremophor® EL (EL-35),...