Effect of Ruboxistaurin on Blood–Retinal Barrier Permeability in Relation to Severity of Leakage in Diabetic Macular Edema

Abstract
Purpose. The purpose of the study was to investigate the effect of orally administered ruboxistaurin (RBX, LY333531), a selective protein kinase C β inhibitor, on the permeability of the blood–retinal barrier in patients with diabetic macular edema.