Effect of Ion-Pairing on In Vitro Transcorneal Permeability of a Δ9- Tetrahydrocannabinol Prodrug Potential in Glaucoma Therapy March 15, 2019 Effect of Ion-Pairing on In Vitro Transcorneal Permeability of a Δ9- Tetrahydrocannabinol Prodrug Potential in Glaucoma Therapy